401097831 has 8 divisors (see below), whose sum is σ = 534971520. Its totient is φ = 267311352.

The previous prime is 401097821. The next prime is 401097841. The reversal of 401097831 is 138790104.

It is an interprime number because it is at equal distance from previous prime (401097821) and next prime (401097841).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401097831 - 2⁷ = 401097703 is a prime.

It is a super-2 number, since 2×401097831² = 321758940065809122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401097792 and 401097801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401097821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10185 + ... + 30098.

It is an arithmetic number, because the mean of its divisors is an integer number (66871440).

Almost surely, 2^401097831 is an apocalyptic number.

401097831 is a deficient number, since it is larger than the sum of its proper divisors (133873689).

401097831 is a wasteful number, since it uses less digits than its factorization.

401097831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43605.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 401097831 is about 20027.4269690342. The cubic root of 401097831 is about 737.4797579812.

The spelling of 401097831 in words is "four hundred one million, ninety-seven thousand, eight hundred thirty-one".