31323213113140 has 48 divisors (see below), whose sum is σ = 70844954019840. Its totient is φ = 11564465040000.

The previous prime is 31323213113099. The next prime is 31323213113201. The reversal of 31323213113140 is 4131131232313.

It is a super-2 number, since 2×31323213113140² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31323213113099 and 31323213113108.

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, 2428660 + ... + 8279179.

It is an arithmetic number, because the mean of its divisors is an integer number (1475936542080).

Almost surely, 2^{31323213113140} is an apocalyptic number.

It is an amenable number.

31323213113140 is an abundant number, since it is smaller than the sum of its proper divisors (39521740906700).

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

31323213113140 is a wasteful number, since it uses less digits than its factorization.

31323213113140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10719112 (or 10719110 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 31323213113140 its reverse (4131131232313), we get a palindrome (35454344345453).

The spelling of 31323213113140 in words is "thirty-one trillion, three hundred twenty-three billion, two hundred thirteen million, one hundred thirteen thousand, one hundred forty".