31312110213000 has 384 divisors, whose sum is σ = 109488892237920. Its totient is φ = 8064910540800.

The previous prime is 31312110212993. The next prime is 31312110213019. The reversal of 31312110213000 is 31201121313.

31312110213000 is a `hidden beast` number, since 3 + 131 + 211 + 0 + 21 + 300 + 0 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 1608062392836 + 29704047820164 = 1268094^2 + 5450142^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 45277824 + ... + 45964176.

Almost surely, 2^{31312110213000} is an apocalyptic number.

31312110213000 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 31312110213000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54744446118960).

31312110213000 is an abundant number, since it is smaller than the sum of its proper divisors (78176782024920).

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

31312110213000 is a wasteful number, since it uses less digits than its factorization.

31312110213000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686554 (or 686537 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31312110213000 its reverse (31201121313), we get a palindrome (31343311334313).

The spelling of 31312110213000 in words is "thirty-one trillion, three hundred twelve billion, one hundred ten million, two hundred thirteen thousand".