31045243442 has 8 divisors (see below), whose sum is σ = 46825146732. Its totient is φ = 15436861200.

The previous prime is 31045243433. The next prime is 31045243451. The reversal of 31045243442 is 24434254013.

It is an interprime number because it is at equal distance from previous prime (31045243433) and next prime (31045243451).

It can be written as a sum of positive squares in 2 ways, for example, as 24793336681 + 6251906761 = 157459^2 + 79069^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31045243399 and 31045243408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42879809 + ... + 42880532.

Almost surely, 2^31045243442 is an apocalyptic number.

31045243442 is a deficient number, since it is larger than the sum of its proper divisors (15779903290).

31045243442 is a wasteful number, since it uses less digits than its factorization.

31045243442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85760524.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 31045243442 its reverse (24434254013), we get a palindrome (55479497455).

The spelling of 31045243442 in words is "thirty-one billion, forty-five million, two hundred forty-three thousand, four hundred forty-two".