3145307531 has 4 divisors (see below), whose sum is σ = 3152407992. Its totient is φ = 3138207072.

The previous prime is 3145307521. The next prime is 3145307537. The reversal of 3145307531 is 1357035413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1357035413 = 26189 ⋅51817.

It is a cyclic number.

It is not a de Polignac number, because 3145307531 - 2⁶ = 3145307467 is a prime.

It is a super-2 number, since 2×3145307531² = 19785918929130631922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3145307537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3549566 + ... + 3550451.

It is an arithmetic number, because the mean of its divisors is an integer number (788101998).

Almost surely, 2^3145307531 is an apocalyptic number.

3145307531 is a deficient number, since it is larger than the sum of its proper divisors (7100461).

3145307531 is an equidigital number, since it uses as much as digits as its factorization.

3145307531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100460.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 3145307531 is about 56083.0413850747. The cubic root of 3145307531 is about 1465.1689447831.

The spelling of 3145307531 in words is "three billion, one hundred forty-five million, three hundred seven thousand, five hundred thirty-one".