31551052441 has 4 divisors (see below), whose sum is σ = 31633431552. Its totient is φ = 31468673332.

The previous prime is 31551052427. The next prime is 31551052451. The reversal of 31551052441 is 14425015513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31551052441 - 2⁵ = 31551052409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31551052451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41188981 + ... + 41189746.

It is an arithmetic number, because the mean of its divisors is an integer number (7908357888).

Almost surely, 2^31551052441 is an apocalyptic number.

It is an amenable number.

31551052441 is a deficient number, since it is larger than the sum of its proper divisors (82379111).

31551052441 is an equidigital number, since it uses as much as digits as its factorization.

31551052441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82379110.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 31551052441 its reverse (14425015513), we get a palindrome (45976067954).

The spelling of 31551052441 in words is "thirty-one billion, five hundred fifty-one million, fifty-two thousand, four hundred forty-one".