490239131 has 2 divisors, whose sum is σ = 490239132. Its totient is φ = 490239130.

The previous prime is 490239077. The next prime is 490239133. The reversal of 490239131 is 131932094.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490239131 is a prime.

It is a super-2 number, since 2×490239131² = 480668811127270322, which contains 22 as substring.

Together with 490239133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (490239133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245119565 + 245119566.

It is an arithmetic number, because the mean of its divisors is an integer number (245119566).

Almost surely, 2^490239131 is an apocalyptic number.

490239131 is a deficient number, since it is larger than the sum of its proper divisors (1).

490239131 is an equidigital number, since it uses as much as digits as its factorization.

490239131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 490239131 is about 22141.3443810443. The cubic root of 490239131 is about 788.5017434449.

The spelling of 490239131 in words is "four hundred ninety million, two hundred thirty-nine thousand, one hundred thirty-one".