3131340245 has 24 divisors (see below), whose sum is σ = 4373234712. Its totient is φ = 2143370240.

The previous prime is 3131340227. The next prime is 3131340263. The reversal of 3131340245 is 5420431313.

It is an interprime number because it is at equal distance from previous prime (3131340227) and next prime (3131340263).

It can be written as a sum of positive squares in 4 ways, for example, as 1064455876 + 2066884369 = 32626^2 + 45463^2 .

It is not a de Polignac number, because 3131340245 - 2¹⁰ = 3131339221 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141944 + ... + 162513.

It is an arithmetic number, because the mean of its divisors is an integer number (182218113).

Almost surely, 2^3131340245 is an apocalyptic number.

It is an amenable number.

3131340245 is a deficient number, since it is larger than the sum of its proper divisors (1241894467).

3131340245 is a wasteful number, since it uses less digits than its factorization.

3131340245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304501 (or 304490 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 3131340245 is about 55958.3795780400. The cubic root of 3131340245 is about 1462.9969472490.

Adding to 3131340245 its reverse (5420431313), we get a palindrome (8551771558).

The spelling of 3131340245 in words is "three billion, one hundred thirty-one million, three hundred forty thousand, two hundred forty-five".