1031879434 has 4 divisors (see below), whose sum is σ = 1547819154. Its totient is φ = 515939716.

The previous prime is 1031879377. The next prime is 1031879437. The reversal of 1031879434 is 4349781301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4349781301 = 13691 ⋅317711.

It can be written as a sum of positive squares in only one way, i.e., 918393025 + 113486409 = 30305^2 + 10653^2 .

It is not an unprimeable number, because it can be changed into a prime (1031879437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257969857 + ... + 257969860.

Almost surely, 2^1031879434 is an apocalyptic number.

1031879434 is a deficient number, since it is larger than the sum of its proper divisors (515939720).

1031879434 is an equidigital number, since it uses as much as digits as its factorization.

1031879434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515939719.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1031879434 is about 32122.8802257830. The cubic root of 1031879434 is about 1010.5155143696.

The spelling of 1031879434 in words is "one billion, thirty-one million, eight hundred seventy-nine thousand, four hundred thirty-four".