31425522431 has 8 divisors (see below), whose sum is σ = 33275751264. Its totient is φ = 29575479040.

The previous prime is 31425522389. The next prime is 31425522509. The reversal of 31425522431 is 13422552413.

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 31425522431 - 2⁶ = 31425522367 is a prime.

It is a super-2 number, since 2×31425522431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425522631) 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, 461726 + ... + 525396.

It is an arithmetic number, because the mean of its divisors is an integer number (4159468908).

Almost surely, 2^31425522431 is an apocalyptic number.

31425522431 is a deficient number, since it is larger than the sum of its proper divisors (1850228833).

31425522431 is a wasteful number, since it uses less digits than its factorization.

31425522431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92721.

The product of its digits is 28800, while the sum is 32.

The spelling of 31425522431 in words is "thirty-one billion, four hundred twenty-five million, five hundred twenty-two thousand, four hundred thirty-one".