31422355231 has 8 divisors (see below), whose sum is σ = 32099723280. Its totient is φ = 30748116672.

The previous prime is 31422355201. The next prime is 31422355309. The reversal of 31422355231 is 13255322413.

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 31422355231 - 2⁷ = 31422355103 is a prime.

It is a super-2 number, since 2×31422355231² (a number of 22 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 = 31422355193 and 31422355202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422355201) 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, 762070 + ... + 802243.

It is an arithmetic number, because the mean of its divisors is an integer number (4012465410).

Almost surely, 2^31422355231 is an apocalyptic number.

31422355231 is a deficient number, since it is larger than the sum of its proper divisors (677368049).

31422355231 is a wasteful number, since it uses less digits than its factorization.

31422355231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564745.

The product of its digits is 21600, while the sum is 31.

Adding to 31422355231 its reverse (13255322413), we get a palindrome (44677677644).

The spelling of 31422355231 in words is "thirty-one billion, four hundred twenty-two million, three hundred fifty-five thousand, two hundred thirty-one".