20311032131 has 8 divisors (see below), whose sum is σ = 21902868960. Its totient is φ = 18723402432.

The previous prime is 20311032121. The next prime is 20311032143. The reversal of 20311032131 is 13123011302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20311032131 - 2¹⁸ = 20310769987 is a prime.

It is a super-2 number, since 2×20311032131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311032101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041746 + ... + 1061063.

It is an arithmetic number, because the mean of its divisors is an integer number (2737858620).

Almost surely, 2^20311032131 is an apocalyptic number.

20311032131 is a deficient number, since it is larger than the sum of its proper divisors (1591836829).

20311032131 is a wasteful number, since it uses less digits than its factorization.

20311032131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103565.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20311032131 its reverse (13123011302), we get a palindrome (33434043433).

The spelling of 20311032131 in words is "twenty billion, three hundred eleven million, thirty-two thousand, one hundred thirty-one".