152490631 has 4 divisors (see below), whose sum is σ = 152971992. Its totient is φ = 152009272.

The previous prime is 152490517. The next prime is 152490659. The reversal of 152490631 is 136094251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136094251 = 37 ⋅3678223.

It is a cyclic number.

It is not a de Polignac number, because 152490631 - 2¹⁵ = 152457863 is a prime.

It is a super-2 number, since 2×152490631² = 46506785085556322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152490593 and 152490602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152490661) 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 3 ways as a sum of consecutive naturals, for example, 240205 + ... + 240838.

It is an arithmetic number, because the mean of its divisors is an integer number (38242998).

Almost surely, 2^152490631 is an apocalyptic number.

152490631 is a deficient number, since it is larger than the sum of its proper divisors (481361).

152490631 is an equidigital number, since it uses as much as digits as its factorization.

152490631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481360.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 152490631 is about 12348.7096896801. The cubic root of 152490631 is about 534.2539238066.

The spelling of 152490631 in words is "one hundred fifty-two million, four hundred ninety thousand, six hundred thirty-one".