31443144324031 has 8 divisors (see below), whose sum is σ = 36319353871824. Its totient is φ = 26903225089920.

The previous prime is 31443144324023. The next prime is 31443144324071. The reversal of 31443144324031 is 13042344134413.

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 31443144324031 - 2³ = 31443144324023 is a prime.

It is a super-2 number, since 2×31443144324031² (a number of 28 digits) contains 22 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 (31443144324001) 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, 84072578220 + ... + 84072578593.

It is an arithmetic number, because the mean of its divisors is an integer number (4539919233978).

Almost surely, 2^{31443144324031} is an apocalyptic number.

31443144324031 is a deficient number, since it is larger than the sum of its proper divisors (4876209547793).

31443144324031 is a wasteful number, since it uses less digits than its factorization.

31443144324031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168145156841.

The product of its (nonzero) digits is 165888, while the sum is 37.

Adding to 31443144324031 its reverse (13042344134413), we get a palindrome (44485488458444).

The spelling of 31443144324031 in words is "thirty-one trillion, four hundred forty-three billion, one hundred forty-four million, three hundred twenty-four thousand, thirty-one".