31320131214 has 32 divisors (see below), whose sum is σ = 63700672896. Its totient is φ = 10263489120.

The previous prime is 31320131207. The next prime is 31320131261. The reversal of 31320131214 is 41213102313.

It is a super-2 number, since 2×31320131214² (a number of 22 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, 705709 + ... + 748775.

It is an arithmetic number, because the mean of its divisors is an integer number (1990646028).

Almost surely, 2^31320131214 is an apocalyptic number.

31320131214 is an abundant number, since it is smaller than the sum of its proper divisors (32380541682).

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

31320131214 is a wasteful number, since it uses less digits than its factorization.

31320131214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45120.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31320131214 its reverse (41213102313), we get a palindrome (72533233527).

The spelling of 31320131214 in words is "thirty-one billion, three hundred twenty million, one hundred thirty-one thousand, two hundred fourteen".