31352351042 has 8 divisors (see below), whose sum is σ = 47444708556. Its totient is φ = 15537448192.

The previous prime is 31352351011. The next prime is 31352351047. The reversal of 31352351042 is 24015325313.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31332894121 + 19456921 = 177011^2 + 4411^2 .

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 = 31352350996 and 31352351014.

It is not an unprimeable number, because it can be changed into a prime (31352351047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69363383 + ... + 69363834.

Almost surely, 2^31352351042 is an apocalyptic number.

31352351042 is a deficient number, since it is larger than the sum of its proper divisors (16092357514).

31352351042 is a wasteful number, since it uses less digits than its factorization.

31352351042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138727332.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 31352351042 its reverse (24015325313), we get a palindrome (55367676355).

The spelling of 31352351042 in words is "thirty-one billion, three hundred fifty-two million, three hundred fifty-one thousand, forty-two".