31404421133411 has 4 divisors (see below), whose sum is σ = 31404816053352. Its totient is φ = 31404026213472.

The previous prime is 31404421133399. The next prime is 31404421133413. The reversal of 31404421133411 is 11433112440413.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31404421133411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31404421133413) 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, 197340665 + ... + 197499738.

It is an arithmetic number, because the mean of its divisors is an integer number (7851204013338).

Almost surely, 2^{31404421133411} is an apocalyptic number.

31404421133411 is a deficient number, since it is larger than the sum of its proper divisors (394919941).

31404421133411 is an equidigital number, since it uses as much as digits as its factorization.

31404421133411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394919940.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 31404421133411 its reverse (11433112440413), we get a palindrome (42837533573824).

The spelling of 31404421133411 in words is "thirty-one trillion, four hundred four billion, four hundred twenty-one million, one hundred thirty-three thousand, four hundred eleven".