31402140434 has 16 divisors (see below), whose sum is σ = 53834516736. Its totient is φ = 13457491200.

The previous prime is 31402140433. The next prime is 31402140443. The reversal of 31402140434 is 43404120413.

It is not an unprimeable number, because it can be changed into a prime (31402140431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606839 + ... + 656549.

It is an arithmetic number, because the mean of its divisors is an integer number (3364657296).

Almost surely, 2^31402140434 is an apocalyptic number.

31402140434 is a deficient number, since it is larger than the sum of its proper divisors (22432376302).

31402140434 is a wasteful number, since it uses less digits than its factorization.

31402140434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94841.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31402140434 its reverse (43404120413), we get a palindrome (74806260847).

The spelling of 31402140434 in words is "thirty-one billion, four hundred two million, one hundred forty thousand, four hundred thirty-four".