2031131219 has 32 divisors (see below), whose sum is σ = 2425127040. Its totient is φ = 1682030592.

The previous prime is 2031131189. The next prime is 2031131231. The reversal of 2031131219 is 9121311302.

It is not a de Polignac number, because 2031131219 - 2¹⁶ = 2031065683 is a prime.

It is a super-2 number, since 2×2031131219² = 8250988057592851922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031131194 and 2031131203.

It is not an unprimeable number, because it can be changed into a prime (2031131279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2078459 + ... + 2079435.

It is an arithmetic number, because the mean of its divisors is an integer number (75785220).

Almost surely, 2^2031131219 is an apocalyptic number.

2031131219 is a deficient number, since it is larger than the sum of its proper divisors (393995821).

2031131219 is a wasteful number, since it uses less digits than its factorization.

2031131219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 2031131219 is about 45068.0731671546. The cubic root of 2031131219 is about 1266.4245683274.

The spelling of 2031131219 in words is "two billion, thirty-one million, one hundred thirty-one thousand, two hundred nineteen".