3123021402 has 12 divisors (see below), whose sum is σ = 6766546410. Its totient is φ = 1041007128.

The previous prime is 3123021389. The next prime is 3123021427. The reversal of 3123021402 is 2041203213.

3123021402 is a `hidden beast` number, since 31 + 230 + 2 + 1 + 402 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3122686161 + 335241 = 55881^2 + 579^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 173501189 = 3123021402 / (3 + 1 + 2 + 3 + 0 + 2 + 1 + 4 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86750577 + ... + 86750612.

Almost surely, 2^3123021402 is an apocalyptic number.

3123021402 is an abundant number, since it is smaller than the sum of its proper divisors (3643525008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3123021402 is a wasteful number, since it uses less digits than its factorization.

3123021402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173501197 (or 173501194 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3123021402 is about 55883.9995168563. Note that the first 3 decimals coincide. The cubic root of 3123021402 is about 1461.7002463277.

Adding to 3123021402 its reverse (2041203213), we get a palindrome (5164224615).

The spelling of 3123021402 in words is "three billion, one hundred twenty-three million, twenty-one thousand, four hundred two".