137910831 has 8 divisors (see below), whose sum is σ = 187793664. Its totient is φ = 89984280.

The previous prime is 137910827. The next prime is 137910889. The reversal of 137910831 is 138019731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 137910831 - 2² = 137910827 is a prime.

It is a super-2 number, since 2×137910831² = 38038794614221122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 137910792 and 137910801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137910811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488905 + ... + 489186.

It is an arithmetic number, because the mean of its divisors is an integer number (23474208).

Almost surely, 2^137910831 is an apocalyptic number.

137910831 is a deficient number, since it is larger than the sum of its proper divisors (49882833).

137910831 is an equidigital number, since it uses as much as digits as its factorization.

137910831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978141.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 137910831 is about 11743.5442265102. The cubic root of 137910831 is about 516.6535983283.

Subtracting 137910831 from its reverse (138019731), we obtain a square (108900 = 330²).

The spelling of 137910831 in words is "one hundred thirty-seven million, nine hundred ten thousand, eight hundred thirty-one".