232406137 has 4 divisors (see below), whose sum is σ = 232444660. Its totient is φ = 232367616.

The previous prime is 232406131. The next prime is 232406143. The reversal of 232406137 is 731604232.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (232406131) and next prime (232406143).

It can be written as a sum of positive squares in 2 ways, for example, as 136679481 + 95726656 = 11691^2 + 9784^2 .

It is a cyclic number.

It is not a de Polignac number, because 232406137 - 2³ = 232406129 is a prime.

It is a super-2 number, since 2×232406137² = 108025225030525538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232406131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8028 + ... + 23005.

It is an arithmetic number, because the mean of its divisors is an integer number (58111165).

Almost surely, 2^232406137 is an apocalyptic number.

It is an amenable number.

232406137 is a deficient number, since it is larger than the sum of its proper divisors (38523).

232406137 is an equidigital number, since it uses as much as digits as its factorization.

232406137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38522.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 232406137 is about 15244.8724822479. The cubic root of 232406137 is about 614.8217140245.

The spelling of 232406137 in words is "two hundred thirty-two million, four hundred six thousand, one hundred thirty-seven".