31444156454 has 16 divisors (see below), whose sum is σ = 50239774368. Its totient is φ = 14708641152.

The previous prime is 31444156409. The next prime is 31444156459. The reversal of 31444156454 is 45465144413.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444156459) 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, 2763269 + ... + 2774624.

It is an arithmetic number, because the mean of its divisors is an integer number (3139985898).

Almost surely, 2^31444156454 is an apocalyptic number.

31444156454 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31444156454 is a deficient number, since it is larger than the sum of its proper divisors (18795617914).

31444156454 is a wasteful number, since it uses less digits than its factorization.

31444156454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538079.

The product of its digits is 460800, while the sum is 41.

The spelling of 31444156454 in words is "thirty-one billion, four hundred forty-four million, one hundred fifty-six thousand, four hundred fifty-four".