31401230890 has 8 divisors (see below), whose sum is σ = 56522215620. Its totient is φ = 12560492352.

The previous prime is 31401230873. The next prime is 31401230933. The reversal of 31401230890 is 9803210413.

It can be written as a sum of positive squares in 2 ways, for example, as 29933498169 + 1467732721 = 173013^2 + 38311^2 .

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

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, 1570061535 + ... + 1570061554.

Almost surely, 2^31401230890 is an apocalyptic number.

31401230890 is a deficient number, since it is larger than the sum of its proper divisors (25120984730).

31401230890 is a wasteful number, since it uses less digits than its factorization.

31401230890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140123096.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 31401230890 in words is "thirty-one billion, four hundred one million, two hundred thirty thousand, eight hundred ninety".