3213131045 has 4 divisors (see below), whose sum is σ = 3855757260. Its totient is φ = 2570504832.

The previous prime is 3213131017. The next prime is 3213131081. The reversal of 3213131045 is 5401313123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 859134721 + 2353996324 = 29311^2 + 48518^2 .

It is a cyclic number.

It is not a de Polignac number, because 3213131045 - 2¹⁴ = 3213114661 is a prime.

It is a super-2 number, since 2×3213131045² = 20648422224685584050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3213131045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321313100 + ... + 321313109.

It is an arithmetic number, because the mean of its divisors is an integer number (963939315).

Almost surely, 2^3213131045 is an apocalyptic number.

It is an amenable number.

3213131045 is a deficient number, since it is larger than the sum of its proper divisors (642626215).

3213131045 is an equidigital number, since it uses as much as digits as its factorization.

3213131045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642626214.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 3213131045 is about 56684.4868107668. The cubic root of 3213131045 is about 1475.6254813485.

Adding to 3213131045 its reverse (5401313123), we get a palindrome (8614444168).

The spelling of 3213131045 in words is "three billion, two hundred thirteen million, one hundred thirty-one thousand, forty-five".