531413621234 has 4 divisors (see below), whose sum is σ = 797120431854. Its totient is φ = 265706810616.

The previous prime is 531413621227. The next prime is 531413621251. The reversal of 531413621234 is 432126314135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 393436290025 + 137977331209 = 627245^2 + 371453^2 .

It is a junction number, because it is equal to n+sod(n) for n = 531413621194 and 531413621203.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132853405307 + ... + 132853405310.

Almost surely, 2^531413621234 is an apocalyptic number.

531413621234 is a deficient number, since it is larger than the sum of its proper divisors (265706810620).

531413621234 is a wasteful number, since it uses less digits than its factorization.

531413621234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265706810619.

The product of its digits is 51840, while the sum is 35.

Adding to 531413621234 its reverse (432126314135), we get a palindrome (963539935369).

The spelling of 531413621234 in words is "five hundred thirty-one billion, four hundred thirteen million, six hundred twenty-one thousand, two hundred thirty-four".