31234403100 has 72 divisors (see below), whose sum is σ = 90705250048. Its totient is φ = 8298417600.

The previous prime is 31234403077. The next prime is 31234403131. The reversal of 31234403100 is 130443213.

It is a super-2 number, since 2×31234403100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110794 + ... + 273393.

Almost surely, 2^31234403100 is an apocalyptic number.

31234403100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31234403100 is an abundant number, since it is smaller than the sum of its proper divisors (59470846948).

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

31234403100 is a wasteful number, since it uses less digits than its factorization.

31234403100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384475 (or 384468 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31234403100 its reverse (130443213), we get a palindrome (31364846313).

The spelling of 31234403100 in words is "thirty-one billion, two hundred thirty-four million, four hundred three thousand, one hundred".