31430304334111 has 4 divisors (see below), whose sum is σ = 31430688945552. Its totient is φ = 31429919722672.

The previous prime is 31430304334069. The next prime is 31430304334133. The reversal of 31430304334111 is 11143340303413.

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-31430304334111 is a prime.

It is a super-2 number, since 2×31430304334111² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430304334181) 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, 192183115 + ... + 192346588.

It is an arithmetic number, because the mean of its divisors is an integer number (7857672236388).

Almost surely, 2^{31430304334111} is an apocalyptic number.

31430304334111 is a deficient number, since it is larger than the sum of its proper divisors (384611441).

31430304334111 is an equidigital number, since it uses as much as digits as its factorization.

31430304334111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384611440.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 31430304334111 its reverse (11143340303413), we get a palindrome (42573644637524).

The spelling of 31430304334111 in words is "thirty-one trillion, four hundred thirty billion, three hundred four million, three hundred thirty-four thousand, one hundred eleven".