31180401 has 12 divisors (see below), whose sum is σ = 51472512. Its totient is φ = 17817336.

The previous prime is 31180367. The next prime is 31180421. The reversal of 31180401 is 10408113.

It is not a de Polignac number, because 31180401 - 2⁶ = 31180337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31180421) 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, 247401 + ... + 247526.

It is an arithmetic number, because the mean of its divisors is an integer number (4289376).

Almost surely, 2^31180401 is an apocalyptic number.

It is an amenable number.

31180401 is a deficient number, since it is larger than the sum of its proper divisors (20292111).

31180401 is a wasteful number, since it uses less digits than its factorization.

31180401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494940 (or 494937 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 31180401 is about 5583.9413499785. The cubic root of 31180401 is about 314.7462506727.

Adding to 31180401 its reverse (10408113), we get a palindrome (41588514).

The spelling of 31180401 in words is "thirty-one million, one hundred eighty thousand, four hundred one".