1431021134 has 4 divisors (see below), whose sum is σ = 2146531704. Its totient is φ = 715510566.

The previous prime is 1431021133. The next prime is 1431021149. The reversal of 1431021134 is 4311201341.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431021131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357755282 + ... + 357755285.

It is an arithmetic number, because the mean of its divisors is an integer number (536632926).

Almost surely, 2^1431021134 is an apocalyptic number.

1431021134 is a deficient number, since it is larger than the sum of its proper divisors (715510570).

1431021134 is an equidigital number, since it uses as much as digits as its factorization.

1431021134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715510569.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1431021134 is about 37828.8399769277. The cubic root of 1431021134 is about 1126.8912737822.

Adding to 1431021134 its reverse (4311201341), we get a palindrome (5742222475).

The spelling of 1431021134 in words is "one billion, four hundred thirty-one million, twenty-one thousand, one hundred thirty-four".