31442230529 has 2 divisors, whose sum is σ = 31442230530. Its totient is φ = 31442230528.

The previous prime is 31442230471. The next prime is 31442230553. The reversal of 31442230529 is 92503224413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26675708929 + 4766521600 = 163327^2 + 69040^2 .

It is an emirp because it is prime and its reverse (92503224413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31442230529 - 2¹² = 31442226433 is a prime.

It is a super-2 number, since 2×31442230529² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31442230829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15721115264 + 15721115265.

It is an arithmetic number, because the mean of its divisors is an integer number (15721115265).

Almost surely, 2^31442230529 is an apocalyptic number.

It is an amenable number.

31442230529 is a deficient number, since it is larger than the sum of its proper divisors (1).

31442230529 is an equidigital number, since it uses as much as digits as its factorization.

31442230529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 31442230529 in words is "thirty-one billion, four hundred forty-two million, two hundred thirty thousand, five hundred twenty-nine".