31125343542 has 16 divisors (see below), whose sum is σ = 62257818672. Its totient is φ = 10373925920.

The previous prime is 31125343541. The next prime is 31125343547. The reversal of 31125343542 is 24534352113.

It is a super-2 number, since 2×31125343542² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31125343541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239553 + ... + 345884.

It is an arithmetic number, because the mean of its divisors is an integer number (3891113667).

Almost surely, 2^31125343542 is an apocalyptic number.

31125343542 is an abundant number, since it is smaller than the sum of its proper divisors (31132475130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31125343542 is a wasteful number, since it uses less digits than its factorization.

31125343542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594303.

The product of its digits is 43200, while the sum is 33.

Adding to 31125343542 its reverse (24534352113), we get a palindrome (55659695655).

The spelling of 31125343542 in words is "thirty-one billion, one hundred twenty-five million, three hundred forty-three thousand, five hundred forty-two".