146155631 has 2 divisors, whose sum is σ = 146155632. Its totient is φ = 146155630.

The previous prime is 146155627. The next prime is 146155637. The reversal of 146155631 is 136551641.

146155631 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 146155631 - 2² = 146155627 is a prime.

It is a super-2 number, since 2×146155631² = 42722936946016322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146155637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73077815 + 73077816.

It is an arithmetic number, because the mean of its divisors is an integer number (73077816).

Almost surely, 2^146155631 is an apocalyptic number.

146155631 is a deficient number, since it is larger than the sum of its proper divisors (1).

146155631 is an equidigital number, since it uses as much as digits as its factorization.

146155631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 146155631 is about 12089.4843148912. The cubic root of 146155631 is about 526.7507760148.

The spelling of 146155631 in words is "one hundred forty-six million, one hundred fifty-five thousand, six hundred thirty-one".