31142444445 has 48 divisors (see below), whose sum is σ = 61724108160. Its totient is φ = 14229067392.

The previous prime is 31142444413. The next prime is 31142444467. The reversal of 31142444445 is 54444424113.

31142444445 is a `hidden beast` number, since 31 + 142 + 4 + 44 + 445 = 666.

It is not a de Polignac number, because 31142444445 - 2⁵ = 31142444413 is a prime.

It is a super-2 number, since 2×31142444445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 598407 + ... + 648363.

It is an arithmetic number, because the mean of its divisors is an integer number (1285918920).

Almost surely, 2^31142444445 is an apocalyptic number.

31142444445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31142444445 is a deficient number, since it is larger than the sum of its proper divisors (30581663715).

31142444445 is a wasteful number, since it uses less digits than its factorization.

31142444445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51954 (or 51951 counting only the distinct ones).

The product of its digits is 122880, while the sum is 36.

Adding to 31142444445 its reverse (54444424113), we get a palindrome (85586868558).

The spelling of 31142444445 in words is "thirty-one billion, one hundred forty-two million, four hundred forty-four thousand, four hundred forty-five".