31020010000 has 200 divisors, whose sum is σ = 86099739264. Its totient is φ = 10602240000.

The previous prime is 31020009997. The next prime is 31020010067. The reversal of 31020010000 is 1002013.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35209560 + ... + 35210440.

Almost surely, 2^31020010000 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 31020010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43049869632).

31020010000 is an abundant number, since it is smaller than the sum of its proper divisors (55079729264).

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

31020010000 is an equidigital number, since it uses as much as digits as its factorization.

31020010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

Adding to 31020010000 its reverse (1002013), we get a palindrome (31021012013).

The spelling of 31020010000 in words is "thirty-one billion, twenty million, ten thousand".