31223240434 has 8 divisors (see below), whose sum is σ = 49589852508. Its totient is φ = 14693289600.

The previous prime is 31223240387. The next prime is 31223240467. The reversal of 31223240434 is 43404232213.

It can be written as a sum of positive squares in 2 ways, for example, as 27196957225 + 4026283209 = 164915^2 + 63453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459165267 + ... + 459165334.

Almost surely, 2^31223240434 is an apocalyptic number.

31223240434 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31223240434 is a deficient number, since it is larger than the sum of its proper divisors (18366612074).

31223240434 is a wasteful number, since it uses less digits than its factorization.

31223240434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918330620.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 31223240434 its reverse (43404232213), we get a palindrome (74627472647).

The spelling of 31223240434 in words is "thirty-one billion, two hundred twenty-three million, two hundred forty thousand, four hundred thirty-four".