21342332131 has 8 divisors (see below), whose sum is σ = 21851346240. Its totient is φ = 20835606528.

The previous prime is 21342332113. The next prime is 21342332149. The reversal of 21342332131 is 13123324312.

It is an interprime number because it is at equal distance from previous prime (21342332113) and next prime (21342332149).

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 21342332131 - 2¹⁷ = 21342201059 is a prime.

It is a super-2 number, since 2×21342332131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21342332096 and 21342332105.

It is not an unprimeable number, because it can be changed into a prime (21342332101) 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, 553246 + ... + 590563.

It is an arithmetic number, because the mean of its divisors is an integer number (2731418280).

Almost surely, 2^21342332131 is an apocalyptic number.

21342332131 is a deficient number, since it is larger than the sum of its proper divisors (509014109).

21342332131 is a wasteful number, since it uses less digits than its factorization.

21342332131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144253.

The product of its digits is 2592, while the sum is 25.

Adding to 21342332131 its reverse (13123324312), we get a palindrome (34465656443).

The spelling of 21342332131 in words is "twenty-one billion, three hundred forty-two million, three hundred thirty-two thousand, one hundred thirty-one".