531042631451 has 4 divisors (see below), whose sum is σ = 534425068752. Its totient is φ = 527660194152.

The previous prime is 531042631411. The next prime is 531042631481. The reversal of 531042631451 is 154136240135.

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

It is a cyclic number.

It is not a de Polignac number, because 531042631451 - 2¹⁸ = 531042369307 is a prime.

It is a super-2 number, since 2×531042631451² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531042631411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691218415 + ... + 1691218728.

It is an arithmetic number, because the mean of its divisors is an integer number (133606267188).

Almost surely, 2^531042631451 is an apocalyptic number.

531042631451 is a deficient number, since it is larger than the sum of its proper divisors (3382437301).

531042631451 is a wasteful number, since it uses less digits than its factorization.

531042631451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382437300.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 531042631451 its reverse (154136240135), we get a palindrome (685178871586).

The spelling of 531042631451 in words is "five hundred thirty-one billion, forty-two million, six hundred thirty-one thousand, four hundred fifty-one".