361031998 has 4 divisors (see below), whose sum is σ = 541548000. Its totient is φ = 180515998.

The previous prime is 361031981. The next prime is 361032029. The reversal of 361031998 is 899130163.

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

It is a self number, because there is not a number n which added to its sum of digits gives 361031998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90257998 + ... + 90258001.

It is an arithmetic number, because the mean of its divisors is an integer number (135387000).

Almost surely, 2^361031998 is an apocalyptic number.

361031998 is a deficient number, since it is larger than the sum of its proper divisors (180516002).

361031998 is a wasteful number, since it uses less digits than its factorization.

361031998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180516001.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 361031998 is about 19000.8420339731. The cubic root of 361031998 is about 712.0577728970.

The spelling of 361031998 in words is "three hundred sixty-one million, thirty-one thousand, nine hundred ninety-eight".