31354399999986 has 32 divisors (see below), whose sum is σ = 71673383050368. Its totient is φ = 8957627118720.

The previous prime is 31354399999981. The next prime is 31354399999987. The reversal of 31354399999986 is 68999999345313.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31354399999981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31710685 + ... + 32684496.

It is an arithmetic number, because the mean of its divisors is an integer number (2239793220324).

Almost surely, 2^{31354399999986} is an apocalyptic number.

31354399999986 is an abundant number, since it is smaller than the sum of its proper divisors (40318983050382).

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

31354399999986 is a wasteful number, since it uses less digits than its factorization.

31354399999986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64406786.

The product of its digits is 13774950720, while the sum is 87.

The spelling of 31354399999986 in words is "thirty-one trillion, three hundred fifty-four billion, three hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-six".