31343440200 has 48 divisors (see below), whose sum is σ = 97164666480. Its totient is φ = 8358250560.

The previous prime is 31343440189. The next prime is 31343440223. The reversal of 31343440200 is 204434313.

It is a super-2 number, since 2×31343440200² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26118934 + ... + 26120133.

It is an arithmetic number, because the mean of its divisors is an integer number (2024263885).

Almost surely, 2^31343440200 is an apocalyptic number.

31343440200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31343440200 is an abundant number, since it is smaller than the sum of its proper divisors (65821226280).

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

31343440200 is a wasteful number, since it uses less digits than its factorization.

31343440200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52239086 (or 52239077 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 31343440200 its reverse (204434313), we get a palindrome (31547874513).

The spelling of 31343440200 in words is "thirty-one billion, three hundred forty-three million, four hundred forty thousand, two hundred".