431311020102 has 16 divisors (see below), whose sum is σ = 958468933680. Its totient is φ = 143770340016.

The previous prime is 431311019977. The next prime is 431311020137. The reversal of 431311020102 is 201020113134.

431311020102 is a `hidden beast` number, since 431 + 3 + 110 + 20 + 102 = 666.

It is a super-2 number, since 2×431311020102² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3993620503 + ... + 3993620610.

It is an arithmetic number, because the mean of its divisors is an integer number (59904308355).

Almost surely, 2^431311020102 is an apocalyptic number.

431311020102 is an abundant number, since it is smaller than the sum of its proper divisors (527157913578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431311020102 is a wasteful number, since it uses less digits than its factorization.

431311020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7987241124 (or 7987241118 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 431311020102 its reverse (201020113134), we get a palindrome (632331133236).

The spelling of 431311020102 in words is "four hundred thirty-one billion, three hundred eleven million, twenty thousand, one hundred two".