31010421403 has 4 divisors (see below), whose sum is σ = 33395838448. Its totient is φ = 28625004360.

The previous prime is 31010421401. The next prime is 31010421427. The reversal of 31010421403 is 30412401013.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31010421403 - 2¹ = 31010421401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31010421401) 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, 1192708503 + ... + 1192708528.

It is an arithmetic number, because the mean of its divisors is an integer number (8348959612).

Almost surely, 2^31010421403 is an apocalyptic number.

31010421403 is a deficient number, since it is larger than the sum of its proper divisors (2385417045).

31010421403 is a wasteful number, since it uses less digits than its factorization.

31010421403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385417044.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31010421403 its reverse (30412401013), we get a palindrome (61422822416).

The spelling of 31010421403 in words is "thirty-one billion, ten million, four hundred twenty-one thousand, four hundred three".