31322320313340 has 96 divisors (see below), whose sum is σ = 100233219308544. Its totient is φ = 7159259335680.

The previous prime is 31322320313299. The next prime is 31322320313381. The reversal of 31322320313340 is 4331302322313.

It is an interprime number because it is at equal distance from previous prime (31322320313299) and next prime (31322320313381).

It is a super-2 number, since 2×31322320313340² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 31322320313298 and 31322320313307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23896825 + ... + 25173455.

It is an arithmetic number, because the mean of its divisors is an integer number (1044096034464).

Almost surely, 2^{31322320313340} is an apocalyptic number.

31322320313340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31322320313340 is an abundant number, since it is smaller than the sum of its proper divisors (68910898995204).

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

31322320313340 is a wasteful number, since it uses less digits than its factorization.

31322320313340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335067 (or 1335065 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 30.

Adding to 31322320313340 its reverse (4331302322313), we get a palindrome (35653622635653).

The spelling of 31322320313340 in words is "thirty-one trillion, three hundred twenty-two billion, three hundred twenty million, three hundred thirteen thousand, three hundred forty".