31240202201 has 16 divisors (see below), whose sum is σ = 35882363664. Its totient is φ = 26942674944.

The previous prime is 31240202197. The next prime is 31240202219. The reversal of 31240202201 is 10220204213.

It can be written as a sum of positive squares in 8 ways, for example, as 389036176 + 30851166025 = 19724^2 + 175645^2 .

It is not a de Polignac number, because 31240202201 - 2² = 31240202197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31240202201.

It is not an unprimeable number, because it can be changed into a prime (31240202251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485630 + ... + 546183.

It is an arithmetic number, because the mean of its divisors is an integer number (2242647729).

Almost surely, 2^31240202201 is an apocalyptic number.

It is an amenable number.

31240202201 is a deficient number, since it is larger than the sum of its proper divisors (4642161463).

31240202201 is a wasteful number, since it uses less digits than its factorization.

31240202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031980.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 31240202201 its reverse (10220204213), we get a palindrome (41460406414).

The spelling of 31240202201 in words is "thirty-one billion, two hundred forty million, two hundred two thousand, two hundred one".