131401890 has 24 divisors (see below), whose sum is σ = 341645148. Its totient is φ = 35040480.

The previous prime is 131401877. The next prime is 131401903. The reversal of 131401890 is 98104131.

It is an interprime number because it is at equal distance from previous prime (131401877) and next prime (131401903).

It can be written as a sum of positive squares in 2 ways, for example, as 131400369 + 1521 = 11463^2 + 39^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 729921 + ... + 730100.

Almost surely, 2^131401890 is an apocalyptic number.

131401890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131401890 is an abundant number, since it is smaller than the sum of its proper divisors (210243258).

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

131401890 is a wasteful number, since it uses less digits than its factorization.

131401890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460034 (or 1460031 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 131401890 is about 11463.0663436970. The cubic root of 131401890 is about 508.3941414909.

The spelling of 131401890 in words is "one hundred thirty-one million, four hundred one thousand, eight hundred ninety".