31213013100030 has 48 divisors (see below), whose sum is σ = 81517752650880. Its totient is φ = 8286145176384.

The previous prime is 31213013100029. The next prime is 31213013100067. The reversal of 31213013100030 is 3000131031213.

It is a happy number.

31213013100030 is a `hidden beast` number, since 3 + 1 + 21 + 301 + 310 + 0 + 0 + 30 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 31213013099976 and 31213013100012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 777583645 + ... + 777623784.

It is an arithmetic number, because the mean of its divisors is an integer number (1698286513560).

Almost surely, 2^{31213013100030} is an apocalyptic number.

31213013100030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31213013100030 is an abundant number, since it is smaller than the sum of its proper divisors (50304739550850).

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

31213013100030 is a wasteful number, since it uses less digits than its factorization.

31213013100030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555207665 (or 1555207662 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31213013100030 its reverse (3000131031213), we get a palindrome (34213144131243).

The spelling of 31213013100030 in words is "thirty-one trillion, two hundred thirteen billion, thirteen million, one hundred thousand, thirty".