131385970 has 16 divisors (see below), whose sum is σ = 237480408. Its totient is φ = 52335360.

The previous prime is 131385953. The next prime is 131385977. The reversal of 131385970 is 79583131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 130439241 + 946729 = 11421^2 + 973^2 .

It is a super-2 number, since 2×131385970² = 34524546225681800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131385977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24849 + ... + 29668.

Almost surely, 2^131385970 is an apocalyptic number.

131385970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131385970 is a deficient number, since it is larger than the sum of its proper divisors (106094438).

131385970 is a wasteful number, since it uses less digits than its factorization.

131385970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54765.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 131385970 is about 11462.3719185865. The cubic root of 131385970 is about 508.3736091591.

It can be divided in two parts, 131385 and 970, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 131385970 in words is "one hundred thirty-one million, three hundred eighty-five thousand, nine hundred seventy".