31987607423 has 8 divisors (see below), whose sum is σ = 32059512480. Its totient is φ = 31915784160.

The previous prime is 31987607413. The next prime is 31987607429. The reversal of 31987607423 is 32470678913.

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 31987607423 - 2¹⁴ = 31987591039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31987607429) 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, 798998 + ... + 838076.

It is an arithmetic number, because the mean of its divisors is an integer number (4007439060).

Almost surely, 2^31987607423 is an apocalyptic number.

31987607423 is a deficient number, since it is larger than the sum of its proper divisors (71905057).

31987607423 is an equidigital number, since it uses as much as digits as its factorization.

31987607423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40897.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 31987607423 in words is "thirty-one billion, nine hundred eighty-seven million, six hundred seven thousand, four hundred twenty-three".