2215445431 has 2 divisors, whose sum is σ = 2215445432. Its totient is φ = 2215445430.

The previous prime is 2215445381. The next prime is 2215445483. The reversal of 2215445431 is 1345445122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2215445431 - 2⁹ = 2215444919 is a prime.

It is a super-2 number, since 2×2215445431² = 9816396915477551522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2215445393 and 2215445402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215415431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107722715 + 1107722716.

It is an arithmetic number, because the mean of its divisors is an integer number (1107722716).

Almost surely, 2^2215445431 is an apocalyptic number.

2215445431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215445431 is an equidigital number, since it uses as much as digits as its factorization.

2215445431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 31.

The square root of 2215445431 is about 47068.5184704171. The cubic root of 2215445431 is about 1303.6280176429.

The spelling of 2215445431 in words is "two billion, two hundred fifteen million, four hundred forty-five thousand, four hundred thirty-one".