131851208100 has 72 divisors (see below), whose sum is σ = 381853386208. Its totient is φ = 35126784000.

The previous prime is 131851208081. The next prime is 131851208143. The reversal of 131851208100 is 1802158131.

It is a super-2 number, since 2×131851208100² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106212 + ... + 524388.

Almost surely, 2^131851208100 is an apocalyptic number.

131851208100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131851208100 is an abundant number, since it is smaller than the sum of its proper divisors (250002178108).

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

131851208100 is a wasteful number, since it uses less digits than its factorization.

131851208100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419245 (or 419238 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 30.

The spelling of 131851208100 in words is "one hundred thirty-one billion, eight hundred fifty-one million, two hundred eight thousand, one hundred".