20124131331 has 8 divisors (see below), whose sum is σ = 26859812544. Its totient is φ = 13402268840.

The previous prime is 20124131303. The next prime is 20124131351. The reversal of 20124131331 is 13313142102.

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 20124131331 - 2²³ = 20115742723 is a prime.

It is a super-2 number, since 2×20124131331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20124131298 and 20124131307.

It is not an unprimeable number, because it can be changed into a prime (20124131351) 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, 3451281 + ... + 3457106.

It is an arithmetic number, because the mean of its divisors is an integer number (3357476568).

Almost surely, 2^20124131331 is an apocalyptic number.

20124131331 is a deficient number, since it is larger than the sum of its proper divisors (6735681213).

20124131331 is an equidigital number, since it uses as much as digits as its factorization.

20124131331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6909361.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20124131331 its reverse (13313142102), we get a palindrome (33437273433).

The spelling of 20124131331 in words is "twenty billion, one hundred twenty-four million, one hundred thirty-one thousand, three hundred thirty-one".