131920370 has 16 divisors (see below), whose sum is σ = 243249048. Its totient is φ = 51480960.

The previous prime is 131920367. The next prime is 131920409. The reversal of 131920370 is 73029131.

It can be written as a sum of positive squares in 4 ways, for example, as 58629649 + 73290721 = 7657^2 + 8561^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160469 + ... + 161288.

Almost surely, 2^131920370 is an apocalyptic number.

131920370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131920370 is a deficient number, since it is larger than the sum of its proper divisors (111328678).

131920370 is a wasteful number, since it uses less digits than its factorization.

131920370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321805.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 131920370 is about 11485.6593193425. The cubic root of 131920370 is about 509.0619306229.

The spelling of 131920370 in words is "one hundred thirty-one million, nine hundred twenty thousand, three hundred seventy".