31503052043 has 16 divisors (see below), whose sum is σ = 33158457696. Its totient is φ = 29890632960.

The previous prime is 31503052037. The next prime is 31503052073. The reversal of 31503052043 is 34025030513.

It is a cyclic number.

It is not a de Polignac number, because 31503052043 - 2¹⁶ = 31502986507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31503052013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5660180 + ... + 5665742.

It is an arithmetic number, because the mean of its divisors is an integer number (2072403606).

Almost surely, 2^31503052043 is an apocalyptic number.

31503052043 is a deficient number, since it is larger than the sum of its proper divisors (1655405653).

31503052043 is a wasteful number, since it uses less digits than its factorization.

31503052043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9374.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 31503052043 its reverse (34025030513), we get a palindrome (65528082556).

The spelling of 31503052043 in words is "thirty-one billion, five hundred three million, fifty-two thousand, forty-three".