31234031421 has 16 divisors (see below), whose sum is σ = 41839237440. Its totient is φ = 20725822080.

The previous prime is 31234031401. The next prime is 31234031461. The reversal of 31234031421 is 12413043213.

It is a happy number.

It is not a de Polignac number, because 31234031421 - 2⁶ = 31234031357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31234031391 and 31234031400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31234031401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2468850 + ... + 2481468.

It is an arithmetic number, because the mean of its divisors is an integer number (2614952340).

Almost surely, 2^31234031421 is an apocalyptic number.

It is an amenable number.

31234031421 is a deficient number, since it is larger than the sum of its proper divisors (10605206019).

31234031421 is a wasteful number, since it uses less digits than its factorization.

31234031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16396.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31234031421 its reverse (12413043213), we get a palindrome (43647074634).

The spelling of 31234031421 in words is "thirty-one billion, two hundred thirty-four million, thirty-one thousand, four hundred twenty-one".