31302334534420 has 48 divisors (see below), whose sum is σ = 65992491991440. Its totient is φ = 12471871832064.

The previous prime is 31302334534357. The next prime is 31302334534433. The reversal of 31302334534420 is 2443543320313.

It can be written as a sum of positive squares in 8 ways, for example, as 3543746010256 + 27758588524164 = 1882484^2 + 5268642^2 .

It is a super-2 number, since 2×31302334534420² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31302334534420.

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, 275596282 + ... + 275709838.

It is an arithmetic number, because the mean of its divisors is an integer number (1374843583155).

Almost surely, 2^{31302334534420} is an apocalyptic number.

It is an amenable number.

31302334534420 is an abundant number, since it is smaller than the sum of its proper divisors (34690157457020).

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

31302334534420 is a wasteful number, since it uses less digits than its factorization.

31302334534420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167452 (or 167450 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 37.

Adding to 31302334534420 its reverse (2443543320313), we get a palindrome (33745877854733).

The spelling of 31302334534420 in words is "thirty-one trillion, three hundred two billion, three hundred thirty-four million, five hundred thirty-four thousand, four hundred twenty".