31152254043 has 4 divisors (see below), whose sum is σ = 41536338728. Its totient is φ = 20768169360.

The previous prime is 31152254039. The next prime is 31152254069. The reversal of 31152254043 is 34045225113.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31152254043 - 2² = 31152254039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31152254043.

It is not an unprimeable number, because it can be changed into a prime (31152254093) 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 3 ways as a sum of consecutive naturals, for example, 5192042338 + ... + 5192042343.

It is an arithmetic number, because the mean of its divisors is an integer number (10384084682).

Almost surely, 2^31152254043 is an apocalyptic number.

31152254043 is a deficient number, since it is larger than the sum of its proper divisors (10384084685).

31152254043 is a wasteful number, since it uses less digits than its factorization.

31152254043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10384084684.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 31152254043 its reverse (34045225113), we get a palindrome (65197479156).

The spelling of 31152254043 in words is "thirty-one billion, one hundred fifty-two million, two hundred fifty-four thousand, forty-three".