2220231431440 has 40 divisors (see below), whose sum is σ = 5631314269248. Its totient is φ = 807356883840.

The previous prime is 2220231431437. The next prime is 2220231431443. The reversal of 2220231431440 is 441341320222.

It is an interprime number because it is at equal distance from previous prime (2220231431437) and next prime (2220231431443).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2220231431440² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2220231431399 and 2220231431408.

It is not an unprimeable number, because it can be changed into a prime (2220231431443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261494252 + ... + 1261496011.

Almost surely, 2^{2220231431440} is an apocalyptic number.

2220231431440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220231431440 is an abundant number, since it is smaller than the sum of its proper divisors (3411082837808).

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

2220231431440 is a wasteful number, since it uses less digits than its factorization.

2220231431440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522990287 (or 2522990281 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2220231431440 its reverse (441341320222), we get a palindrome (2661572751662).

The spelling of 2220231431440 in words is "two trillion, two hundred twenty billion, two hundred thirty-one million, four hundred thirty-one thousand, four hundred forty".