31371201 has 9 divisors (see below), whose sum is σ = 45338241. Its totient is φ = 20902932.

The previous prime is 31371169. The next prime is 31371203. The reversal of 31371201 is 10217313.

The square root of 31371201 is 5601.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 31371201 - 2⁵ = 31371169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31371203) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15870 + ... + 17736.

Almost surely, 2^31371201 is an apocalyptic number.

31371201 is the 5601-st square number.

31371201 is the 2801-st centered octagonal number.

It is an amenable number.

31371201 is a deficient number, since it is larger than the sum of its proper divisors (13967040).

31371201 is an frugal number, since it uses more digits than its factorization.

31371201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740 (or 1870 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The cubic root of 31371201 is about 315.3869470030.

Adding to 31371201 its reverse (10217313), we get a palindrome (41588514).

The spelling of 31371201 in words is "thirty-one million, three hundred seventy-one thousand, two hundred one".