31421704043 has 4 divisors (see below), whose sum is σ = 33075477960. Its totient is φ = 29767930128.

The previous prime is 31421704009. The next prime is 31421704049. The reversal of 31421704043 is 34040712413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34040712413 = 1831 ⋅18591323.

It is a cyclic number.

It is not a de Polignac number, because 31421704043 - 2⁸ = 31421703787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31421703997 and 31421704015.

It is not an unprimeable number, because it can be changed into a prime (31421704049) 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, 826886930 + ... + 826886967.

It is an arithmetic number, because the mean of its divisors is an integer number (8268869490).

Almost surely, 2^31421704043 is an apocalyptic number.

31421704043 is a deficient number, since it is larger than the sum of its proper divisors (1653773917).

31421704043 is a wasteful number, since it uses less digits than its factorization.

31421704043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653773916.

The product of its (nonzero) digits is 8064, while the sum is 29.

The spelling of 31421704043 in words is "thirty-one billion, four hundred twenty-one million, seven hundred four thousand, forty-three".