31402540000 has 120 divisors (see below), whose sum is σ = 83198336760. Its totient is φ = 11594688000.

The previous prime is 31402539979. The next prime is 31402540027. The reversal of 31402540000 is 4520413.

It is a super-2 number, since 2×31402540000² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31402540000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 199611 + ... + 320389.

It is an arithmetic number, because the mean of its divisors is an integer number (693319473).

Almost surely, 2^31402540000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31402540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41599168380).

31402540000 is an abundant number, since it is smaller than the sum of its proper divisors (51795796760).

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

31402540000 is a wasteful number, since it uses less digits than its factorization.

31402540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120822 (or 120799 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

It can be divided in two parts, 314025 and 40000, that added together give a square (354025 = 595²).

The spelling of 31402540000 in words is "thirty-one billion, four hundred two million, five hundred forty thousand".