1431122402 has 4 divisors (see below), whose sum is σ = 2146683606. Its totient is φ = 715561200.

The previous prime is 1431122401. The next prime is 1431122419. The reversal of 1431122402 is 2042211341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2042211341 = 43 ⋅47493287.

It can be written as a sum of positive squares in only one way, i.e., 955489921 + 475632481 = 30911^2 + 21809^2 .

It is a super-2 number, since 2×1431122402² = 4096222659012499208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1431122401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357780599 + ... + 357780602.

Almost surely, 2^1431122402 is an apocalyptic number.

1431122402 is a deficient number, since it is larger than the sum of its proper divisors (715561204).

1431122402 is an equidigital number, since it uses as much as digits as its factorization.

1431122402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715561203.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1431122402 is about 37830.1784558307. The cubic root of 1431122402 is about 1126.9178551119.

Adding to 1431122402 its reverse (2042211341), we get a palindrome (3473333743).

The spelling of 1431122402 in words is "one billion, four hundred thirty-one million, one hundred twenty-two thousand, four hundred two".