31001132401 has 4 divisors (see below), whose sum is σ = 31002165412. Its totient is φ = 31000099392.

The previous prime is 31001132353. The next prime is 31001132417. The reversal of 31001132401 is 10423110013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1973491776 + 29027640625 = 44424^2 + 170375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31001132401 is a prime.

It is a super-2 number, since 2×31001132401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31001132441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470100 + ... + 531973.

It is an arithmetic number, because the mean of its divisors is an integer number (7750541353).

Almost surely, 2^31001132401 is an apocalyptic number.

It is an amenable number.

31001132401 is a deficient number, since it is larger than the sum of its proper divisors (1033011).

31001132401 is a wasteful number, since it uses less digits than its factorization.

31001132401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033010.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31001132401 its reverse (10423110013), we get a palindrome (41424242414).

The spelling of 31001132401 in words is "thirty-one billion, one million, one hundred thirty-two thousand, four hundred one".