31143233051 has 32 divisors (see below), whose sum is σ = 38716293120. Its totient is φ = 24446772000.

The previous prime is 31143233039. The next prime is 31143233059. The reversal of 31143233051 is 15033234113.

It is not a de Polignac number, because 31143233051 - 2¹⁸ = 31142970907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31143233051.

It is not an unprimeable number, because it can be changed into a prime (31143233059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4329680 + ... + 4336866.

It is an arithmetic number, because the mean of its divisors is an integer number (1209884160).

Almost surely, 2^31143233051 is an apocalyptic number.

31143233051 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31143233051 is a deficient number, since it is larger than the sum of its proper divisors (7573060069).

31143233051 is a wasteful number, since it uses less digits than its factorization.

31143233051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8295.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 31143233051 its reverse (15033234113), we get a palindrome (46176467164).

The spelling of 31143233051 in words is "thirty-one billion, one hundred forty-three million, two hundred thirty-three thousand, fifty-one".