31542354445 has 16 divisors (see below), whose sum is σ = 45138873600. Its totient is φ = 20688649344.

The previous prime is 31542354419. The next prime is 31542354539. The reversal of 31542354445 is 54445324513.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31542354445 is a prime.

It is a super-2 number, since 2×31542354445² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31542354398 and 31542354407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19590720 + ... + 19592329.

It is an arithmetic number, because the mean of its divisors is an integer number (2821179600).

Almost surely, 2^31542354445 is an apocalyptic number.

31542354445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31542354445 is a deficient number, since it is larger than the sum of its proper divisors (13596519155).

31542354445 is a wasteful number, since it uses less digits than its factorization.

31542354445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39183084.

The product of its digits is 576000, while the sum is 40.

Adding to 31542354445 its reverse (54445324513), we get a palindrome (85987678958).

The spelling of 31542354445 in words is "thirty-one billion, five hundred forty-two million, three hundred fifty-four thousand, four hundred forty-five".