31151423386 has 8 divisors (see below), whose sum is σ = 47163837600. Its totient is φ = 15430144188.

The previous prime is 31151423297. The next prime is 31151423447. The reversal of 31151423386 is 68332415113.

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

It is a super-2 number, since 2×31151423386² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72783486 + ... + 72783913.

It is an arithmetic number, because the mean of its divisors is an integer number (5895479700).

Almost surely, 2^31151423386 is an apocalyptic number.

31151423386 is a deficient number, since it is larger than the sum of its proper divisors (16012414214).

31151423386 is a wasteful number, since it uses less digits than its factorization.

31151423386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145567508.

The product of its digits is 51840, while the sum is 37.

Adding to 31151423386 its reverse (68332415113), we get a palindrome (99483838499).

The spelling of 31151423386 in words is "thirty-one billion, one hundred fifty-one million, four hundred twenty-three thousand, three hundred eighty-six".