31011111342 has 24 divisors (see below), whose sum is σ = 67336509240. Its totient is φ = 10314611280.

The previous prime is 31011111293. The next prime is 31011111409. The reversal of 31011111342 is 24311111013.

It is a happy number.

31011111342 is a `hidden beast` number, since 310 + 1 + 1 + 1 + 11 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1860292 + ... + 1876887.

It is an arithmetic number, because the mean of its divisors is an integer number (2805687885).

Almost surely, 2^31011111342 is an apocalyptic number.

31011111342 is an abundant number, since it is smaller than the sum of its proper divisors (36325397898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31011111342 is a wasteful number, since it uses less digits than its factorization.

31011111342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737648 (or 3737645 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 31011111342 its reverse (24311111013), we get a palindrome (55322222355).

The spelling of 31011111342 in words is "thirty-one billion, eleven million, one hundred eleven thousand, three hundred forty-two".