31194474002 has 4 divisors (see below), whose sum is σ = 46791711006. Its totient is φ = 15597237000.

The previous prime is 31194474001. The next prime is 31194474043. The reversal of 31194474002 is 20047449113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17798494921 + 13395979081 = 133411^2 + 115741^2 .

It is a super-2 number, since 2×31194474002² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31194474001) by changing a digit.

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 as a sum of consecutive naturals, namely, 7798618499 + ... + 7798618502.

Almost surely, 2^31194474002 is an apocalyptic number.

31194474002 is a deficient number, since it is larger than the sum of its proper divisors (15597237004).

31194474002 is a wasteful number, since it uses less digits than its factorization.

31194474002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15597237003.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 31194474002 in words is "thirty-one billion, one hundred ninety-four million, four hundred seventy-four thousand, two".