3121021026 has 12 divisors (see below), whose sum is σ = 6762212262. Its totient is φ = 1040340336.

The previous prime is 3121021009. The next prime is 3121021031. The reversal of 3121021026 is 6201201213.

It can be written as a sum of positive squares in only one way, i.e., 2515122801 + 605898225 = 50151^2 + 24615^2 .

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: 173390057 = 3121021026 / (3 + 1 + 2 + 1 + 0 + 2 + 1 + 0 + 2 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86695011 + ... + 86695046.

Almost surely, 2^3121021026 is an apocalyptic number.

3121021026 is an abundant number, since it is smaller than the sum of its proper divisors (3641191236).

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

3121021026 is a wasteful number, since it uses less digits than its factorization.

3121021026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173390065 (or 173390062 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3121021026 is about 55866.0990762734. The cubic root of 3121021026 is about 1461.3880940638.

Adding to 3121021026 its reverse (6201201213), we get a palindrome (9322222239).

The spelling of 3121021026 in words is "three billion, one hundred twenty-one million, twenty-one thousand, twenty-six".