31014721423 has 4 divisors (see below), whose sum is σ = 35445395920. Its totient is φ = 26584046928.

The previous prime is 31014721417. The next prime is 31014721453. The reversal of 31014721423 is 32412741013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32412741013 = 2251 ⋅14399263.

It is a cyclic number.

It is not a de Polignac number, because 31014721423 - 2⁵ = 31014721391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31014721391 and 31014721400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31014721403) 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, 2215337238 + ... + 2215337251.

It is an arithmetic number, because the mean of its divisors is an integer number (8861348980).

Almost surely, 2^31014721423 is an apocalyptic number.

31014721423 is a deficient number, since it is larger than the sum of its proper divisors (4430674497).

31014721423 is an equidigital number, since it uses as much as digits as its factorization.

31014721423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430674496.

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 31014721423 in words is "thirty-one billion, fourteen million, seven hundred twenty-one thousand, four hundred twenty-three".