31903190441 has 2 divisors, whose sum is σ = 31903190442. Its totient is φ = 31903190440.

The previous prime is 31903190401. The next prime is 31903190483. The reversal of 31903190441 is 14409130913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20367571225 + 11535619216 = 142715^2 + 107404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31903190441 is a prime.

It is not a weakly prime, because it can be changed into another prime (31903190401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15951595220 + 15951595221.

It is an arithmetic number, because the mean of its divisors is an integer number (15951595221).

Almost surely, 2^31903190441 is an apocalyptic number.

It is an amenable number.

31903190441 is a deficient number, since it is larger than the sum of its proper divisors (1).

31903190441 is an equidigital number, since it uses as much as digits as its factorization.

31903190441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 31903190441 in words is "thirty-one billion, nine hundred three million, one hundred ninety thousand, four hundred forty-one".