3137040021 has 4 divisors (see below), whose sum is σ = 4182720032. Its totient is φ = 2091360012.

The previous prime is 3137040019. The next prime is 3137040037. The reversal of 3137040021 is 1200407313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3137040021 - 2¹ = 3137040019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3137040021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3137040041) 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, 522840001 + ... + 522840006.

It is an arithmetic number, because the mean of its divisors is an integer number (1045680008).

Almost surely, 2^3137040021 is an apocalyptic number.

It is an amenable number.

3137040021 is a deficient number, since it is larger than the sum of its proper divisors (1045680011).

3137040021 is a wasteful number, since it uses less digits than its factorization.

3137040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045680010.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 3137040021 is about 56009.2851320207. The cubic root of 3137040021 is about 1463.8840754271.

Adding to 3137040021 its reverse (1200407313), we get a palindrome (4337447334).

The spelling of 3137040021 in words is "three billion, one hundred thirty-seven million, forty thousand, twenty-one".