290901901531 has 2 divisors, whose sum is σ = 290901901532. Its totient is φ = 290901901530.

The previous prime is 290901901513. The next prime is 290901901541. The reversal of 290901901531 is 135109109092.

Together with previous prime (290901901513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 290901901531 - 2⁷ = 290901901403 is a prime.

It is a super-2 number, since 2×290901901531² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (290901901541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145450950765 + 145450950766.

It is an arithmetic number, because the mean of its divisors is an integer number (145450950766).

Almost surely, 2^290901901531 is an apocalyptic number.

290901901531 is a deficient number, since it is larger than the sum of its proper divisors (1).

290901901531 is an equidigital number, since it uses as much as digits as its factorization.

290901901531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 40.

The spelling of 290901901531 in words is "two hundred ninety billion, nine hundred one million, nine hundred one thousand, five hundred thirty-one".