137431470 has 32 divisors (see below), whose sum is σ = 359821440. Its totient is φ = 33316640.

The previous prime is 137431433. The next prime is 137431471. The reversal of 137431470 is 74134731.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137431471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207900 + ... + 208559.

It is an arithmetic number, because the mean of its divisors is an integer number (11244420).

Almost surely, 2^137431470 is an apocalyptic number.

137431470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137431470 is an abundant number, since it is smaller than the sum of its proper divisors (222389970).

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

137431470 is a wasteful number, since it uses less digits than its factorization.

137431470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416480.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 137431470 is about 11723.1169063522. The cubic root of 137431470 is about 516.0542954104.

The spelling of 137431470 in words is "one hundred thirty-seven million, four hundred thirty-one thousand, four hundred seventy".