156331641 has 4 divisors (see below), whose sum is σ = 208442192. Its totient is φ = 104221092.

The previous prime is 156331633. The next prime is 156331673. The reversal of 156331641 is 146133651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 156331641 - 2³ = 156331633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156331599 and 156331608.

It is not an unprimeable number, because it can be changed into a prime (156331741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26055271 + ... + 26055276.

It is an arithmetic number, because the mean of its divisors is an integer number (52110548).

Almost surely, 2^156331641 is an apocalyptic number.

It is an amenable number.

156331641 is a deficient number, since it is larger than the sum of its proper divisors (52110551).

156331641 is an equidigital number, since it uses as much as digits as its factorization.

156331641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52110550.

The product of its digits is 6480, while the sum is 30.

The square root of 156331641 is about 12503.2652135352. The cubic root of 156331641 is about 538.7024642824.

The spelling of 156331641 in words is "one hundred fifty-six million, three hundred thirty-one thousand, six hundred forty-one".