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102223031 = 714673083
BaseRepresentation
bin1100001011111…
…00110010110111
321010100110122012
412011330302313
5202132114111
614050554435
72350611221
oct605746267
9233313565
10102223031
115277a749
122a298a1b
1318241601
14d80d411
158e9348b
hex617ccb7

102223031 has 8 divisors (see below), whose sum is σ = 103918464. Its totient is φ = 100534840.

The previous prime is 102223019. The next prime is 102223067. The reversal of 102223031 is 130322201.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-102223031 is a prime.

It is a super-2 number, since 2×1022230312 = 20899096133653922, 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 = 102222997 and 102223015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102223631) 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, 31616 + ... + 34698.

It is an arithmetic number, because the mean of its divisors is an integer number (12989808).

Almost surely, 2102223031 is an apocalyptic number.

102223031 is a deficient number, since it is larger than the sum of its proper divisors (1695433).

102223031 is an equidigital number, since it uses as much as digits as its factorization.

102223031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 102223031 is about 10110.5405889102. The cubic root of 102223031 is about 467.5731720330.

Adding to 102223031 its reverse (130322201), we get a palindrome (232545232).

The spelling of 102223031 in words is "one hundred two million, two hundred twenty-three thousand, thirty-one".

Divisors: 1 71 467 3083 33157 218893 1439761 102223031