31234143430 has 32 divisors (see below), whose sum is σ = 64259193600. Its totient is φ = 10707832800.

The previous prime is 31234143427. The next prime is 31234143431. The reversal of 31234143430 is 3434143213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31234143431) 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, 1367605 + ... + 1390255.

It is an arithmetic number, because the mean of its divisors is an integer number (2008099800).

Almost surely, 2^31234143430 is an apocalyptic number.

31234143430 is an abundant number, since it is smaller than the sum of its proper divisors (33025050170).

31234143430 is a wasteful number, since it uses less digits than its factorization.

31234143430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42364.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 31234143430 its reverse (3434143213), we get a palindrome (34668286643).

The spelling of 31234143430 in words is "thirty-one billion, two hundred thirty-four million, one hundred forty-three thousand, four hundred thirty".