3121486923 has 4 divisors (see below), whose sum is σ = 4161982568. Its totient is φ = 2080991280.

The previous prime is 3121486903. The next prime is 3121486931. The reversal of 3121486923 is 3296841213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3296841213 = 3 ⋅1098947071.

It is not a de Polignac number, because 3121486923 - 2¹² = 3121482827 is a prime.

It is a super-2 number, since 2×3121486923² = 19487361220920015858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121486903) 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, 520247818 + ... + 520247823.

It is an arithmetic number, because the mean of its divisors is an integer number (1040495642).

Almost surely, 2^3121486923 is an apocalyptic number.

3121486923 is a deficient number, since it is larger than the sum of its proper divisors (1040495645).

3121486923 is a wasteful number, since it uses less digits than its factorization.

3121486923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040495644.

The product of its digits is 62208, while the sum is 39.

The square root of 3121486923 is about 55870.2686855898. The cubic root of 3121486923 is about 1461.4608077096.

The spelling of 3121486923 in words is "three billion, one hundred twenty-one million, four hundred eighty-six thousand, nine hundred twenty-three".