156828631 has 2 divisors, whose sum is σ = 156828632. Its totient is φ = 156828630.

The previous prime is 156828619. The next prime is 156828677. The reversal of 156828631 is 136828651.

156828631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 156828631 - 2⁵ = 156828599 is a prime.

It is a super-2 number, since 2×156828631² = 49190439002668322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156828691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78414315 + 78414316.

It is an arithmetic number, because the mean of its divisors is an integer number (78414316).

Almost surely, 2^156828631 is an apocalyptic number.

156828631 is a deficient number, since it is larger than the sum of its proper divisors (1).

156828631 is an equidigital number, since it uses as much as digits as its factorization.

156828631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The square root of 156828631 is about 12523.1238514997. The cubic root of 156828631 is about 539.2727189134.

The spelling of 156828631 in words is "one hundred fifty-six million, eight hundred twenty-eight thousand, six hundred thirty-one".