31454440533431 has 8 divisors (see below), whose sum is σ = 31961335304304. Its totient is φ = 30948646512960.

The previous prime is 31454440533337. The next prime is 31454440533469. The reversal of 31454440533431 is 13433504445413.

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 31454440533431 - 2³⁴ = 31437260664247 is a prime.

It is a super-2 number, since 2×31454440533431² (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 (31454440523431) 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, 275129990 + ... + 275244291.

It is an arithmetic number, because the mean of its divisors is an integer number (3995166913038).

Almost surely, 2^{31454440533431} is an apocalyptic number.

31454440533431 is a deficient number, since it is larger than the sum of its proper divisors (506894770873).

31454440533431 is an equidigital number, since it uses as much as digits as its factorization.

31454440533431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550375201.

The product of its (nonzero) digits is 2073600, while the sum is 44.

Adding to 31454440533431 its reverse (13433504445413), we get a palindrome (44887944978844).

The spelling of 31454440533431 in words is "thirty-one trillion, four hundred fifty-four billion, four hundred forty million, five hundred thirty-three thousand, four hundred thirty-one".