401311031 has 8 divisors (see below), whose sum is σ = 439613328. Its totient is φ = 363312000.

The previous prime is 401311007. The next prime is 401311037. The reversal of 401311031 is 130113104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401311031 is a prime.

It is a super-4 number, since 4×401311031⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 401310997 and 401311015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401311037) 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, 73040 + ... + 78341.

It is an arithmetic number, because the mean of its divisors is an integer number (54951666).

Almost surely, 2^401311031 is an apocalyptic number.

401311031 is a deficient number, since it is larger than the sum of its proper divisors (38302297).

401311031 is a wasteful number, since it uses less digits than its factorization.

401311031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151633.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 401311031 is about 20032.7489626362. The cubic root of 401311031 is about 737.6104017812.

Adding to 401311031 its reverse (130113104), we get a palindrome (531424135).

The spelling of 401311031 in words is "four hundred one million, three hundred eleven thousand, thirty-one".