31100421443 has 16 divisors (see below), whose sum is σ = 38284861440. Its totient is φ = 24602157216.

The previous prime is 31100421437. The next prime is 31100421463. The reversal of 31100421443 is 34412400113.

It is not a de Polignac number, because 31100421443 - 2³⁰ = 30026679619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31100421463) 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, 482846 + ... + 543452.

It is an arithmetic number, because the mean of its divisors is an integer number (2392803840).

Almost surely, 2^31100421443 is an apocalyptic number.

31100421443 is a deficient number, since it is larger than the sum of its proper divisors (7184439997).

31100421443 is a wasteful number, since it uses less digits than its factorization.

31100421443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66266.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31100421443 its reverse (34412400113), we get a palindrome (65512821556).

The spelling of 31100421443 in words is "thirty-one billion, one hundred million, four hundred twenty-one thousand, four hundred forty-three".