31405389134 has 16 divisors (see below), whose sum is σ = 53844137088. Its totient is φ = 13457870712.

The previous prime is 31405389133. The next prime is 31405389151. The reversal of 31405389134 is 43198350413.

It is a junction number, because it is equal to n+sod(n) for n = 31405389091 and 31405389100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31405389133) 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, 4172 + ... + 250655.

It is an arithmetic number, because the mean of its divisors is an integer number (3365258568).

Almost surely, 2^31405389134 is an apocalyptic number.

31405389134 is a deficient number, since it is larger than the sum of its proper divisors (22438747954).

31405389134 is a wasteful number, since it uses less digits than its factorization.

31405389134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263639.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 31405389134 in words is "thirty-one billion, four hundred five million, three hundred eighty-nine thousand, one hundred thirty-four".