2040430155031 has 4 divisors (see below), whose sum is σ = 2061465517552. Its totient is φ = 2019394792512.

The previous prime is 2040430154989. The next prime is 2040430155037. The reversal of 2040430155031 is 1305510340402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040430155031 is a prime.

It is a super-2 number, since 2×2040430155031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040430155037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10517681115 + ... + 10517681308.

It is an arithmetic number, because the mean of its divisors is an integer number (515366379388).

Almost surely, 2^{2040430155031} is an apocalyptic number.

2040430155031 is a deficient number, since it is larger than the sum of its proper divisors (21035362521).

2040430155031 is an equidigital number, since it uses as much as digits as its factorization.

2040430155031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21035362520.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 2040430155031 its reverse (1305510340402), we get a palindrome (3345940495433).

The spelling of 2040430155031 in words is "two trillion, forty billion, four hundred thirty million, one hundred fifty-five thousand, thirty-one".