31402144423 has 16 divisors (see below), whose sum is σ = 34544633760. Its totient is φ = 28366326144.

The previous prime is 31402144349. The next prime is 31402144427. The reversal of 31402144423 is 32444120413.

It is not a de Polignac number, because 31402144423 - 2¹³ = 31402136231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31402144391 and 31402144400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31402144427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209440 + ... + 326602.

It is an arithmetic number, because the mean of its divisors is an integer number (2159039610).

Almost surely, 2^31402144423 is an apocalyptic number.

31402144423 is a deficient number, since it is larger than the sum of its proper divisors (3142489337).

31402144423 is a wasteful number, since it uses less digits than its factorization.

31402144423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117618.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31402144423 its reverse (32444120413), we get a palindrome (63846264836).

The spelling of 31402144423 in words is "thirty-one billion, four hundred two million, one hundred forty-four thousand, four hundred twenty-three".