22402015315231 has 4 divisors (see below), whose sum is σ = 22436639759952. Its totient is φ = 22367390870512.

The previous prime is 22402015315187. The next prime is 22402015315259. The reversal of 22402015315231 is 13251351020422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22402015315231 - 2²³ = 22402006926623 is a prime.

It is a super-2 number, since 2×22402015315231² (a number of 28 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 = 22402015315193 and 22402015315202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22402015315291) 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, 17312221390 + ... + 17312222683.

It is an arithmetic number, because the mean of its divisors is an integer number (5609159939988).

Almost surely, 2^{22402015315231} is an apocalyptic number.

22402015315231 is a deficient number, since it is larger than the sum of its proper divisors (34624444721).

22402015315231 is an equidigital number, since it uses as much as digits as its factorization.

22402015315231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34624444720.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 22402015315231 its reverse (13251351020422), we get a palindrome (35653366335653).

The spelling of 22402015315231 in words is "twenty-two trillion, four hundred two billion, fifteen million, three hundred fifteen thousand, two hundred thirty-one".