31664200355340 has 96 divisors (see below), whose sum is σ = 101334954438144. Its totient is φ = 7236851988480.

The previous prime is 31664200355321. The next prime is 31664200355353. The reversal of 31664200355340 is 4355300246613.

It is a super-2 number, since 2×31664200355340² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 31664200355292 and 31664200355301.

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, 946300 + ... + 8013980.

It is an arithmetic number, because the mean of its divisors is an integer number (1055572442064).

Almost surely, 2^{31664200355340} is an apocalyptic number.

31664200355340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31664200355340 is an abundant number, since it is smaller than the sum of its proper divisors (69670754082804).

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

31664200355340 is a wasteful number, since it uses less digits than its factorization.

31664200355340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7078367 (or 7078365 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 31664200355340 in words is "thirty-one trillion, six hundred sixty-four billion, two hundred million, three hundred fifty-five thousand, three hundred forty".