31234030400 has 84 divisors (see below), whose sum is σ = 78642740352. Its totient is φ = 12203036160.

The previous prime is 31234030397. The next prime is 31234030409. The reversal of 31234030400 is 403043213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31234030409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158192 + ... + 295791.

Almost surely, 2^31234030400 is an apocalyptic number.

It is an amenable number.

31234030400 is an abundant number, since it is smaller than the sum of its proper divisors (47408709952).

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

31234030400 is a wasteful number, since it uses less digits than its factorization.

31234030400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454048 (or 454033 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 31234030400 its reverse (403043213), we get a palindrome (31637073613).

The spelling of 31234030400 in words is "thirty-one billion, two hundred thirty-four million, thirty thousand, four hundred".