31153452542 has 16 divisors (see below), whose sum is σ = 48248604672. Its totient is φ = 15070813560.

The previous prime is 31153452443. The next prime is 31153452593. The reversal of 31153452542 is 24525435113.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228143 + ... + 338165.

It is an arithmetic number, because the mean of its divisors is an integer number (3015537792).

Almost surely, 2^31153452542 is an apocalyptic number.

31153452542 is a deficient number, since it is larger than the sum of its proper divisors (17095152130).

31153452542 is a wasteful number, since it uses less digits than its factorization.

31153452542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114623.

The product of its digits is 72000, while the sum is 35.

Adding to 31153452542 its reverse (24525435113), we get a palindrome (55678887655).

The spelling of 31153452542 in words is "thirty-one billion, one hundred fifty-three million, four hundred fifty-two thousand, five hundred forty-two".