20311255732 has 12 divisors (see below), whose sum is σ = 35568515556. Its totient is φ = 10148822720.

The previous prime is 20311255729. The next prime is 20311255739. The reversal of 20311255732 is 23755211302.

It can be written as a sum of positive squares in 2 ways, for example, as 18737229456 + 1574026276 = 136884^2 + 39674^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20311255694 and 20311255703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311255739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694569 + ... + 1706512.

It is an arithmetic number, because the mean of its divisors is an integer number (2964042963).

Almost surely, 2^20311255732 is an apocalyptic number.

It is an amenable number.

20311255732 is a deficient number, since it is larger than the sum of its proper divisors (15257259824).

20311255732 is a wasteful number, since it uses less digits than its factorization.

20311255732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402578 (or 3402576 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 20311255732 in words is "twenty billion, three hundred eleven million, two hundred fifty-five thousand, seven hundred thirty-two".