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1213131203101 = 1998081754379
BaseRepresentation
bin10001101001110100010…
…000010010001000011101
311021222022012101100021001
4101221310100102020131
5124333443041444401
62325145455510301
7153434344042006
oct21516420221035
94258265340231
101213131203101
11428538a35364
12177143228391
138a522c0697c
1442a044881ad
1521852907601
hex11a7441221d

1213131203101 has 8 divisors (see below), whose sum is σ = 1219379832000. Its totient is φ = 1206884099520.

The previous prime is 1213131203093. The next prime is 1213131203111. The reversal of 1213131203101 is 1013021313121.

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 1213131203101 - 23 = 1213131203093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213131203111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230930 + ... + 1985308.

It is an arithmetic number, because the mean of its divisors is an integer number (152422479000).

Almost surely, 21213131203101 is an apocalyptic number.

It is an amenable number.

1213131203101 is a deficient number, since it is larger than the sum of its proper divisors (6248628899).

1213131203101 is an equidigital number, since it uses as much as digits as its factorization.

1213131203101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762659.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1213131203101 its reverse (1013021313121), we get a palindrome (2226152516222).

The spelling of 1213131203101 in words is "one trillion, two hundred thirteen billion, one hundred thirty-one million, two hundred three thousand, one hundred one".

Divisors: 1 199 8081 754379 1608119 150121421 6096136699 1213131203101