31401330434 has 4 divisors (see below), whose sum is σ = 47101995654. Its totient is φ = 15700665216.

The previous prime is 31401330397. The next prime is 31401330439. The reversal of 31401330434 is 43403310413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21154829809 + 10246500625 = 145447^2 + 101225^2 .

It is not an unprimeable number, because it can be changed into a prime (31401330439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7850332607 + ... + 7850332610.

Almost surely, 2^31401330434 is an apocalyptic number.

31401330434 is a deficient number, since it is larger than the sum of its proper divisors (15700665220).

31401330434 is a wasteful number, since it uses less digits than its factorization.

31401330434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15700665219.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 31401330434 its reverse (43403310413), we get a palindrome (74804640847).

The spelling of 31401330434 in words is "thirty-one billion, four hundred one million, three hundred thirty thousand, four hundred thirty-four".