31263313542 has 16 divisors (see below), whose sum is σ = 62694263280. Its totient is φ = 10393165152.

The previous prime is 31263313519. The next prime is 31263313547. The reversal of 31263313542 is 24531336213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31263313547) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6982417 + ... + 6986892.

It is an arithmetic number, because the mean of its divisors is an integer number (3918391455).

Almost surely, 2^31263313542 is an apocalyptic number.

31263313542 is an abundant number, since it is smaller than the sum of its proper divisors (31430949738).

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

31263313542 is a wasteful number, since it uses less digits than its factorization.

31263313542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13969687.

The product of its digits is 38880, while the sum is 33.

Adding to 31263313542 its reverse (24531336213), we get a palindrome (55794649755).

The spelling of 31263313542 in words is "thirty-one billion, two hundred sixty-three million, three hundred thirteen thousand, five hundred forty-two".