31404214424 has 64 divisors (see below), whose sum is σ = 67506531840. Its totient is φ = 13565784960.

The previous prime is 31404214411. The next prime is 31404214453. The reversal of 31404214424 is 42441240413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27857 + ... + 252159.

It is an arithmetic number, because the mean of its divisors is an integer number (1054789560).

Almost surely, 2^31404214424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31404214424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33753265920).

31404214424 is an abundant number, since it is smaller than the sum of its proper divisors (36102317416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31404214424 is a wasteful number, since it uses less digits than its factorization.

31404214424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224400 (or 224396 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 31404214424 its reverse (42441240413), we get a palindrome (73845454837).

The spelling of 31404214424 in words is "thirty-one billion, four hundred four million, two hundred fourteen thousand, four hundred twenty-four".