31190136346 has 8 divisors (see below), whose sum is σ = 48049669620. Its totient is φ = 15173579808.

The previous prime is 31190136277. The next prime is 31190136359. The reversal of 31190136346 is 64363109113.

It can be written as a sum of positive squares in 2 ways, for example, as 26966566225 + 4223570121 = 164215^2 + 64989^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210744091 + ... + 210744238.

Almost surely, 2^31190136346 is an apocalyptic number.

31190136346 is a deficient number, since it is larger than the sum of its proper divisors (16859533274).

31190136346 is a wasteful number, since it uses less digits than its factorization.

31190136346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421488368.

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 31190136346 in words is "thirty-one billion, one hundred ninety million, one hundred thirty-six thousand, three hundred forty-six".