31452671971621 has 8 divisors (see below), whose sum is σ = 32837815269504. Its totient is φ = 30068998325520.

The previous prime is 31452671971543. The next prime is 31452671971703. The reversal of 31452671971621 is 12617917625413.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31452671971621 - 2⁷ = 31452671971493 is a prime.

It is a super-4 number, since 4×31452671971621⁴ (a number of 55 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31452671971121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367369201 + ... + 367454806.

It is an arithmetic number, because the mean of its divisors is an integer number (4104726908688).

Almost surely, 2^{31452671971621} is an apocalyptic number.

It is an amenable number.

31452671971621 is a deficient number, since it is larger than the sum of its proper divisors (1385143297883).

31452671971621 is a wasteful number, since it uses less digits than its factorization.

31452671971621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734825891.

The product of its digits is 3810240, while the sum is 55.

The spelling of 31452671971621 in words is "thirty-one trillion, four hundred fifty-two billion, six hundred seventy-one million, nine hundred seventy-one thousand, six hundred twenty-one".