3131313045 has 32 divisors (see below), whose sum is σ = 6062646528. Its totient is φ = 1347253248.

The previous prime is 3131313041. The next prime is 3131313109. The reversal of 3131313045 is 5403131313.

It is not a de Polignac number, because 3131313045 - 2² = 3131313041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131313041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 875334 + ... + 878903.

It is an arithmetic number, because the mean of its divisors is an integer number (189457704).

Almost surely, 2^3131313045 is an apocalyptic number.

3131313045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3131313045 is a deficient number, since it is larger than the sum of its proper divisors (2931333483).

3131313045 is a wasteful number, since it uses less digits than its factorization.

3131313045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754269.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 3131313045 is about 55958.1365397383. The cubic root of 3131313045 is about 1462.9927111893.

Adding to 3131313045 its reverse (5403131313), we get a palindrome (8534444358).

The spelling of 3131313045 in words is "three billion, one hundred thirty-one million, three hundred thirteen thousand, forty-five".