31030102442 has 8 divisors (see below), whose sum is σ = 46814201316. Its totient is φ = 15425368672.

The previous prime is 31030102403. The next prime is 31030102507. The reversal of 31030102442 is 24420103013.

It can be written as a sum of positive squares in 2 ways, for example, as 28143082081 + 2887020361 = 167759^2 + 53731^2 .

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

It is a super-2 number, since 2×31030102442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44840843 + ... + 44841534.

Almost surely, 2^31030102442 is an apocalyptic number.

31030102442 is a deficient number, since it is larger than the sum of its proper divisors (15784098874).

31030102442 is a wasteful number, since it uses less digits than its factorization.

31030102442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89682552.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31030102442 its reverse (24420103013), we get a palindrome (55450205455).

The spelling of 31030102442 in words is "thirty-one billion, thirty million, one hundred two thousand, four hundred forty-two".