31453023451 has 4 divisors (see below), whose sum is σ = 31453446312. Its totient is φ = 31452600592.

The previous prime is 31453023449. The next prime is 31453023463. The reversal of 31453023451 is 15432035413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31453023451 - 2¹ = 31453023449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31453021451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66946 + ... + 259591.

It is an arithmetic number, because the mean of its divisors is an integer number (7863361578).

Almost surely, 2^31453023451 is an apocalyptic number.

31453023451 is a deficient number, since it is larger than the sum of its proper divisors (422861).

31453023451 is an equidigital number, since it uses as much as digits as its factorization.

31453023451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422860.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 31453023451 its reverse (15432035413), we get a palindrome (46885058864).

The spelling of 31453023451 in words is "thirty-one billion, four hundred fifty-three million, twenty-three thousand, four hundred fifty-one".