2031213431 has 16 divisors (see below), whose sum is σ = 2372636448. Its totient is φ = 1721625600.

The previous prime is 2031213377. The next prime is 2031213491. The reversal of 2031213431 is 1343121302.

It is a cyclic number.

It is not a de Polignac number, because 2031213431 - 2⁶ = 2031213367 is a prime.

It is a super-2 number, since 2×2031213431² = 8251656004549583522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031213491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103025 + ... + 121146.

It is an arithmetic number, because the mean of its divisors is an integer number (148289778).

Almost surely, 2^2031213431 is an apocalyptic number.

2031213431 is a deficient number, since it is larger than the sum of its proper divisors (341423017).

2031213431 is a wasteful number, since it uses less digits than its factorization.

2031213431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224242.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2031213431 is about 45068.9852448444. The cubic root of 2031213431 is about 1266.4416546832.

Adding to 2031213431 its reverse (1343121302), we get a palindrome (3374334733).

The spelling of 2031213431 in words is "two billion, thirty-one million, two hundred thirteen thousand, four hundred thirty-one".