290242631 has 6 divisors (see below), whose sum is σ = 337629240. Its totient is φ = 248779356.

The previous prime is 290242609. The next prime is 290242639. The reversal of 290242631 is 136242092.

It is a de Polignac number, because none of the positive numbers 2^k-290242631 is a prime.

It is a super-2 number, since 2×290242631² = 168481569699604322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 290242594 and 290242603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290242639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2961611 + ... + 2961708.

It is an arithmetic number, because the mean of its divisors is an integer number (56271540).

Almost surely, 2^290242631 is an apocalyptic number.

290242631 is a deficient number, since it is larger than the sum of its proper divisors (47386609).

290242631 is an equidigital number, since it uses as much as digits as its factorization.

290242631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5923333 (or 5923326 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 290242631 is about 17036.5087679372. The cubic root of 290242631 is about 662.0951410799.

The spelling of 290242631 in words is "two hundred ninety million, two hundred forty-two thousand, six hundred thirty-one".