31156125000 has 896 divisors, whose sum is σ = 132298306560. Its totient is φ = 5904000000.

The previous prime is 31156124999. The next prime is 31156125017. The reversal of 31156125000 is 52165113.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 375374959 + ... + 375375041.

It is an arithmetic number, because the mean of its divisors is an integer number (147654360).

Almost surely, 2^31156125000 is an apocalyptic number.

31156125000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31156125000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66149153280).

31156125000 is an abundant number, since it is smaller than the sum of its proper divisors (101142181560).

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

31156125000 is a wasteful number, since it uses less digits than its factorization.

31156125000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 31156125000 in words is "thirty-one billion, one hundred fifty-six million, one hundred twenty-five thousand".