3747216131 has 4 divisors (see below), whose sum is σ = 3753062664. Its totient is φ = 3741369600.

The previous prime is 3747216101. The next prime is 3747216139. The reversal of 3747216131 is 1316127473.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1316127473 = 19 ⋅69269867.

It is a cyclic number.

It is not a de Polignac number, because 3747216131 - 2¹⁴ = 3747199747 is a prime.

It is a super-2 number, since 2×3747216131² = 28083257464853218322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3747216091 and 3747216100.

It is not an unprimeable number, because it can be changed into a prime (3747216139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2922305 + ... + 2923586.

It is an arithmetic number, because the mean of its divisors is an integer number (938265666).

Almost surely, 2^3747216131 is an apocalyptic number.

3747216131 is a deficient number, since it is larger than the sum of its proper divisors (5846533).

3747216131 is an equidigital number, since it uses as much as digits as its factorization.

3747216131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846532.

The product of its digits is 21168, while the sum is 35.

The square root of 3747216131 is about 61214.5091542847. The cubic root of 3747216131 is about 1553.2317076592.

The spelling of 3747216131 in words is "three billion, seven hundred forty-seven million, two hundred sixteen thousand, one hundred thirty-one".