31234238790 has 128 divisors (see below), whose sum is σ = 78814052352. Its totient is φ = 7912383360.

The previous prime is 31234238779. The next prime is 31234238813. The reversal of 31234238790 is 9783243213.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 12889519 + ... + 12891941.

It is an arithmetic number, because the mean of its divisors is an integer number (615734784).

Almost surely, 2^31234238790 is an apocalyptic number.

31234238790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31234238790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39407026176).

31234238790 is an abundant number, since it is smaller than the sum of its proper divisors (47579813562).

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

31234238790 is a wasteful number, since it uses less digits than its factorization.

31234238790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714.

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 31234238790 in words is "thirty-one billion, two hundred thirty-four million, two hundred thirty-eight thousand, seven hundred ninety".