31555231100230 has 32 divisors (see below), whose sum is σ = 58561518135456. Its totient is φ = 12233168953344.

The previous prime is 31555231100213. The next prime is 31555231100231. The reversal of 31555231100230 is 3200113255513.

It is a junction number, because it is equal to n+sod(n) for n = 31555231100192 and 31555231100201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31555231100231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165827884 + ... + 166018063.

It is an arithmetic number, because the mean of its divisors is an integer number (1830047441733).

Almost surely, 2^{31555231100230} is an apocalyptic number.

31555231100230 is a deficient number, since it is larger than the sum of its proper divisors (27006287035226).

31555231100230 is a wasteful number, since it uses less digits than its factorization.

31555231100230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331846248.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 31555231100230 its reverse (3200113255513), we get a palindrome (34755344355743).

The spelling of 31555231100230 in words is "thirty-one trillion, five hundred fifty-five billion, two hundred thirty-one million, one hundred thousand, two hundred thirty".