31200011411220 has 72 divisors (see below), whose sum is σ = 94640646600864. Its totient is φ = 8319949242048.

The previous prime is 31200011411131. The next prime is 31200011411237. The reversal of 31200011411220 is 2211411000213.

31200011411220 is a `hidden beast` number, since 3 + 1 + 20 + 0 + 0 + 11 + 411 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31200011411193 and 31200011411202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32880267 + ... + 33815853.

It is an arithmetic number, because the mean of its divisors is an integer number (1314453425012).

Almost surely, 2^{31200011411220} is an apocalyptic number.

31200011411220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31200011411220 is an abundant number, since it is smaller than the sum of its proper divisors (63440635189644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31200011411220 is a wasteful number, since it uses less digits than its factorization.

31200011411220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120869 (or 1120864 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 31200011411220 its reverse (2211411000213), we get a palindrome (33411422411433).

The spelling of 31200011411220 in words is "thirty-one trillion, two hundred billion, eleven million, four hundred eleven thousand, two hundred twenty".