401293831 has 2 divisors, whose sum is σ = 401293832. Its totient is φ = 401293830.

The previous prime is 401293817. The next prime is 401293847. The reversal of 401293831 is 138392104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401293831 - 2⁵ = 401293799 is a prime.

It is a super-2 number, since 2×401293831² = 322073477597313122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401293793 and 401293802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401293861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200646915 + 200646916.

It is an arithmetic number, because the mean of its divisors is an integer number (200646916).

Almost surely, 2^401293831 is an apocalyptic number.

401293831 is a deficient number, since it is larger than the sum of its proper divisors (1).

401293831 is an equidigital number, since it uses as much as digits as its factorization.

401293831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 401293831 is about 20032.3196609878. The cubic root of 401293831 is about 737.5998637536.

The spelling of 401293831 in words is "four hundred one million, two hundred ninety-three thousand, eight hundred thirty-one".