31434023421 has 12 divisors (see below), whose sum is σ = 45406469472. Its totient is φ = 20955199176.

The previous prime is 31434023371. The next prime is 31434023441. The reversal of 31434023421 is 12432043413.

31434023421 is a `hidden beast` number, since 314 + 3 + 4 + 0 + 2 + 342 + 1 = 666.

It is not a de Polignac number, because 31434023421 - 2⁷ = 31434023293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434023441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258070 + ... + 359816.

It is an arithmetic number, because the mean of its divisors is an integer number (3783872456).

Almost surely, 2^31434023421 is an apocalyptic number.

It is an amenable number.

31434023421 is a deficient number, since it is larger than the sum of its proper divisors (13972446051).

31434023421 is a wasteful number, since it uses less digits than its factorization.

31434023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136080 (or 136077 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 31434023421 its reverse (12432043413), we get a palindrome (43866066834).

The spelling of 31434023421 in words is "thirty-one billion, four hundred thirty-four million, twenty-three thousand, four hundred twenty-one".