31475223203 has 2 divisors, whose sum is σ = 31475223204. Its totient is φ = 31475223202.

The previous prime is 31475223187. The next prime is 31475223239. The reversal of 31475223203 is 30232257413.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31475223203 - 2⁴ = 31475223187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31475223203.

It is not a weakly prime, because it can be changed into another prime (31475243203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15737611601 + 15737611602.

It is an arithmetic number, because the mean of its divisors is an integer number (15737611602).

Almost surely, 2^31475223203 is an apocalyptic number.

31475223203 is a deficient number, since it is larger than the sum of its proper divisors (1).

31475223203 is an equidigital number, since it uses as much as digits as its factorization.

31475223203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 32.

The spelling of 31475223203 in words is "thirty-one billion, four hundred seventy-five million, two hundred twenty-three thousand, two hundred three".