102620506431 has 4 divisors (see below), whose sum is σ = 136827341912. Its totient is φ = 68413670952.

The previous prime is 102620506423. The next prime is 102620506433. The reversal of 102620506431 is 134605026201.

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

It is not a de Polignac number, because 102620506431 - 2³ = 102620506423 is a prime.

It is a super-2 number, since 2×102620506431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102620506433) 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, 17103417736 + ... + 17103417741.

It is an arithmetic number, because the mean of its divisors is an integer number (34206835478).

Almost surely, 2^102620506431 is an apocalyptic number.

102620506431 is a deficient number, since it is larger than the sum of its proper divisors (34206835481).

102620506431 is an equidigital number, since it uses as much as digits as its factorization.

102620506431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34206835480.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 102620506431 in words is "one hundred two billion, six hundred twenty million, five hundred six thousand, four hundred thirty-one".