445312213531 has 2 divisors, whose sum is σ = 445312213532. Its totient is φ = 445312213530.

The previous prime is 445312213523. The next prime is 445312213601. The reversal of 445312213531 is 135312213544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445312213531 - 2³ = 445312213523 is a prime.

It is a super-2 number, since 2×445312213531² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (445312213631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222656106765 + 222656106766.

It is an arithmetic number, because the mean of its divisors is an integer number (222656106766).

Almost surely, 2^445312213531 is an apocalyptic number.

445312213531 is a deficient number, since it is larger than the sum of its proper divisors (1).

445312213531 is an equidigital number, since it uses as much as digits as its factorization.

445312213531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The spelling of 445312213531 in words is "four hundred forty-five billion, three hundred twelve million, two hundred thirteen thousand, five hundred thirty-one".