31144342332403 has 4 divisors (see below), whose sum is σ = 31435410952440. Its totient is φ = 30853273712368.

The previous prime is 31144342332377. The next prime is 31144342332449. The reversal of 31144342332403 is 30423324344113.

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 31144342332403 - 2²⁹ = 31143805461491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31144342336403) 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, 145534309858 + ... + 145534310071.

It is an arithmetic number, because the mean of its divisors is an integer number (7858852738110).

Almost surely, 2^{31144342332403} is an apocalyptic number.

31144342332403 is a deficient number, since it is larger than the sum of its proper divisors (291068620037).

31144342332403 is a wasteful number, since it uses less digits than its factorization.

31144342332403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291068620036.

The product of its (nonzero) digits is 248832, while the sum is 37.

Adding to 31144342332403 its reverse (30423324344113), we get a palindrome (61567666676516).

The spelling of 31144342332403 in words is "thirty-one trillion, one hundred forty-four billion, three hundred forty-two million, three hundred thirty-two thousand, four hundred three".