31144401 has 12 divisors (see below), whose sum is σ = 47354320. Its totient is φ = 19670040.

The previous prime is 31144397. The next prime is 31144423. The reversal of 31144401 is 10444113.

It is not a de Polignac number, because 31144401 - 2² = 31144397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31144441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90895 + ... + 91236.

Almost surely, 2^31144401 is an apocalyptic number.

It is an amenable number.

31144401 is a deficient number, since it is larger than the sum of its proper divisors (16209919).

31144401 is a wasteful number, since it uses less digits than its factorization.

31144401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182156 (or 182153 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 31144401 is about 5580.7168894328. The cubic root of 31144401 is about 314.6250716818.

Adding to 31144401 its reverse (10444113), we get a palindrome (41588514).

The spelling of 31144401 in words is "thirty-one million, one hundred forty-four thousand, four hundred one".