2031212431 has 4 divisors (see below), whose sum is σ = 2041523352. Its totient is φ = 2020901512.

The previous prime is 2031212429. The next prime is 2031212453. The reversal of 2031212431 is 1342121302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1342121302 = 2 ⋅671060651.

It is a cyclic number.

It is not a de Polignac number, because 2031212431 - 2¹ = 2031212429 is a prime.

It is a super-2 number, since 2×2031212431² = 8251647879697859522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031212399 and 2031212408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031212471) 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, 5155165 + ... + 5155558.

It is an arithmetic number, because the mean of its divisors is an integer number (510380838).

Almost surely, 2^2031212431 is an apocalyptic number.

2031212431 is a deficient number, since it is larger than the sum of its proper divisors (10310921).

2031212431 is a wasteful number, since it uses less digits than its factorization.

2031212431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10310920.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2031212431 is about 45068.9741507392. The cubic root of 2031212431 is about 1266.4414468531.

Adding to 2031212431 its reverse (1342121302), we get a palindrome (3373333733).

The spelling of 2031212431 in words is "two billion, thirty-one million, two hundred twelve thousand, four hundred thirty-one".