1401265931 has 8 divisors (see below), whose sum is σ = 1509816000. Its totient is φ = 1292824512.

The previous prime is 1401265909. The next prime is 1401265949. The reversal of 1401265931 is 1395621041.

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-1401265931 is a prime.

It is a super-2 number, since 2×1401265931² = 3927092418762593522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401265991) 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, 695 + ... + 52943.

It is an arithmetic number, because the mean of its divisors is an integer number (188727000).

Almost surely, 2^1401265931 is an apocalyptic number.

1401265931 is a deficient number, since it is larger than the sum of its proper divisors (108550069).

1401265931 is a wasteful number, since it uses less digits than its factorization.

1401265931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54325.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1401265931 is about 37433.4867598518. The cubic root of 1401265931 is about 1119.0260269316.

Adding to 1401265931 its reverse (1395621041), we get a palindrome (2796886972).

The spelling of 1401265931 in words is "one billion, four hundred one million, two hundred sixty-five thousand, nine hundred thirty-one".