31342422431 has 4 divisors (see below), whose sum is σ = 31347966600. Its totient is φ = 31336878264.

The previous prime is 31342422421. The next prime is 31342422443. The reversal of 31342422431 is 13422424313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13422424313 = 90989 ⋅147517.

It is a cyclic number.

It is not a de Polignac number, because 31342422431 - 2¹⁴ = 31342406047 is a prime.

It is a super-2 number, since 2×31342422431² (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 = 31342422394 and 31342422403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31342422421) 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, 2763596 + ... + 2774913.

It is an arithmetic number, because the mean of its divisors is an integer number (7836991650).

Almost surely, 2^31342422431 is an apocalyptic number.

31342422431 is a deficient number, since it is larger than the sum of its proper divisors (5544169).

31342422431 is an equidigital number, since it uses as much as digits as its factorization.

31342422431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544168.

The product of its digits is 13824, while the sum is 29.

Adding to 31342422431 its reverse (13422424313), we get a palindrome (44764846744).

The spelling of 31342422431 in words is "thirty-one billion, three hundred forty-two million, four hundred twenty-two thousand, four hundred thirty-one".