31105144354452 has 48 divisors (see below), whose sum is σ = 83165909352960. Its totient is φ = 8863735057632.

The previous prime is 31105144354409. The next prime is 31105144354469. The reversal of 31105144354452 is 25445344150113.

It is a super-2 number, since 2×31105144354452² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488489718 + ... + 488553389.

It is an arithmetic number, because the mean of its divisors is an integer number (1732623111520).

Almost surely, 2^{31105144354452} is an apocalyptic number.

It is an amenable number.

31105144354452 is an abundant number, since it is smaller than the sum of its proper divisors (52060764998508).

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

31105144354452 is a wasteful number, since it uses less digits than its factorization.

31105144354452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977043500 (or 977043498 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 31105144354452 in words is "thirty-one trillion, one hundred five billion, one hundred forty-four million, three hundred fifty-four thousand, four hundred fifty-two".