102697631 has 4 divisors (see below), whose sum is σ = 105085992. Its totient is φ = 100309272.

The previous prime is 102697619. The next prime is 102697633. The reversal of 102697631 is 136796201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102697631 - 2¹⁴ = 102681247 is a prime.

It is a super-2 number, since 2×102697631² = 21093606826024322, 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 = 102697591 and 102697600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102697633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194116 + ... + 1194201.

It is an arithmetic number, because the mean of its divisors is an integer number (26271498).

Almost surely, 2^102697631 is an apocalyptic number.

102697631 is a deficient number, since it is larger than the sum of its proper divisors (2388361).

102697631 is an equidigital number, since it uses as much as digits as its factorization.

102697631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388360.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 102697631 is about 10133.9839648580. The cubic root of 102697631 is about 468.2956696309.

The spelling of 102697631 in words is "one hundred two million, six hundred ninety-seven thousand, six hundred thirty-one".