2231540019 has 6 divisors (see below), whose sum is σ = 3223335596. Its totient is φ = 1487693340.

The previous prime is 2231539963. The next prime is 2231540023. The reversal of 2231540019 is 9100451322.

It is not a de Polignac number, because 2231540019 - 2¹⁷ = 2231408947 is a prime.

It is a super-3 number, since 3×2231540019³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231539974 and 2231540001.

It is not an unprimeable number, because it can be changed into a prime (2231540029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123974437 + ... + 123974454.

Almost surely, 2^2231540019 is an apocalyptic number.

2231540019 is a deficient number, since it is larger than the sum of its proper divisors (991795577).

2231540019 is a wasteful number, since it uses less digits than its factorization.

2231540019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247948897 (or 247948894 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2231540019 is about 47239.1788561148. The cubic root of 2231540019 is about 1306.7772341606. Note that the first 3 decimals are identical.

The spelling of 2231540019 in words is "two billion, two hundred thirty-one million, five hundred forty thousand, nineteen".