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1302213031 = 71631141291
BaseRepresentation
bin100110110011110…
…0011000110100111
310100202100021110021
41031213203012213
510131331304111
6333114540011
744161425310
oct11547430647
93322307407
101302213031
11609079a19
12304137607
13179a31372
14c4d39607
15794cad71
hex4d9e31a7

1302213031 has 8 divisors (see below), whose sum is σ = 1497375104. Its totient is φ = 1109333880.

The previous prime is 1302213019. The next prime is 1302213037. The reversal of 1302213031 is 1303122031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1302213031 - 219 = 1301688743 is a prime.

It is a super-2 number, since 2×13022130312 = 3391517556212413922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1302212996 and 1302213014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302213037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569505 + ... + 571786.

It is an arithmetic number, because the mean of its divisors is an integer number (187171888).

Almost surely, 21302213031 is an apocalyptic number.

1302213031 is a deficient number, since it is larger than the sum of its proper divisors (195162073).

1302213031 is a wasteful number, since it uses less digits than its factorization.

1302213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141461.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1302213031 is about 36086.1889231878. The cubic root of 1302213031 is about 1092.0118361480.

Adding to 1302213031 its reverse (1303122031), we get a palindrome (2605335062).

The spelling of 1302213031 in words is "one billion, three hundred two million, two hundred thirteen thousand, thirty-one".

Divisors: 1 7 163 1141 1141291 7989037 186030433 1302213031