31313202214044 has 48 divisors (see below), whose sum is σ = 74566935959040. Its totient is φ = 10224307873920.

The previous prime is 31313202214033. The next prime is 31313202214067. The reversal of 31313202214044 is 44041220231313.

It is a super-2 number, since 2×31313202214044² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78498004 + ... + 78895899.

It is an arithmetic number, because the mean of its divisors is an integer number (1553477832480).

Almost surely, 2^{31313202214044} is an apocalyptic number.

It is an amenable number.

31313202214044 is an abundant number, since it is smaller than the sum of its proper divisors (43253733744996).

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

31313202214044 is a wasteful number, since it uses less digits than its factorization.

31313202214044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157394250 (or 157394248 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 31313202214044 its reverse (44041220231313), we get a palindrome (75354422445357).

The spelling of 31313202214044 in words is "thirty-one trillion, three hundred thirteen billion, two hundred two million, two hundred fourteen thousand, forty-four".