31135451111 has 8 divisors (see below), whose sum is σ = 31651898880. Its totient is φ = 30622368312.

The previous prime is 31135451071. The next prime is 31135451119. The reversal of 31135451111 is 11115453113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31135451111 is a prime.

It is a super-2 number, since 2×31135451111² (a number of 22 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 (31135451119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822581 + ... + 859598.

It is an arithmetic number, because the mean of its divisors is an integer number (3956487360).

Almost surely, 2^31135451111 is an apocalyptic number.

31135451111 is a deficient number, since it is larger than the sum of its proper divisors (516447769).

31135451111 is a wasteful number, since it uses less digits than its factorization.

31135451111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682485.

The product of its digits is 900, while the sum is 26.

The spelling of 31135451111 in words is "thirty-one billion, one hundred thirty-five million, four hundred fifty-one thousand, one hundred eleven".