2131431034 has 4 divisors (see below), whose sum is σ = 3197146554. Its totient is φ = 1065715516.

The previous prime is 2131431031. The next prime is 2131431047. The reversal of 2131431034 is 4301341312.

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

It can be written as a sum of positive squares in only one way, i.e., 1474790409 + 656640625 = 38403^2 + 25625^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2131430996 and 2131431014.

It is not an unprimeable number, because it can be changed into a prime (2131431031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532857757 + ... + 532857760.

Almost surely, 2^2131431034 is an apocalyptic number.

2131431034 is a deficient number, since it is larger than the sum of its proper divisors (1065715520).

2131431034 is a wasteful number, since it uses less digits than its factorization.

2131431034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065715519.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2131431034 is about 46167.4239480610. The cubic root of 2131431034 is about 1286.9364303078.

Adding to 2131431034 its reverse (4301341312), we get a palindrome (6432772346).

The spelling of 2131431034 in words is "two billion, one hundred thirty-one million, four hundred thirty-one thousand, thirty-four".