31142355445 has 8 divisors (see below), whose sum is σ = 38282310360. Its totient is φ = 24306228480.

The previous prime is 31142355443. The next prime is 31142355469. The reversal of 31142355445 is 54455324113.

It can be written as a sum of positive squares in 4 ways, for example, as 5015189124 + 26127166321 = 70818^2 + 161639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31142355445 - 2¹ = 31142355443 is a prime.

It is a super-2 number, since 2×31142355445² (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 (31142355443) 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, 75956760 + ... + 75957169.

It is an arithmetic number, because the mean of its divisors is an integer number (4785288795).

Almost surely, 2^31142355445 is an apocalyptic number.

It is an amenable number.

31142355445 is a deficient number, since it is larger than the sum of its proper divisors (7139954915).

31142355445 is a wasteful number, since it uses less digits than its factorization.

31142355445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151913975.

The product of its digits is 144000, while the sum is 37.

Adding to 31142355445 its reverse (54455324113), we get a palindrome (85597679558).

The spelling of 31142355445 in words is "thirty-one billion, one hundred forty-two million, three hundred fifty-five thousand, four hundred forty-five".