1431972946 has 4 divisors (see below), whose sum is σ = 2147959422. Its totient is φ = 715986472.

The previous prime is 1431972901. The next prime is 1431972973. The reversal of 1431972946 is 6492791341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6492791341 = 53 ⋅122505497.

It can be written as a sum of positive squares in only one way, i.e., 746109225 + 685863721 = 27315^2 + 26189^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1431972896 and 1431972905.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357993235 + ... + 357993238.

Almost surely, 2^1431972946 is an apocalyptic number.

1431972946 is a deficient number, since it is larger than the sum of its proper divisors (715986476).

1431972946 is an equidigital number, since it uses as much as digits as its factorization.

1431972946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715986475.

The product of its digits is 326592, while the sum is 46.

The square root of 1431972946 is about 37841.4183930782. The cubic root of 1431972946 is about 1127.1410606644.

The spelling of 1431972946 in words is "one billion, four hundred thirty-one million, nine hundred seventy-two thousand, nine hundred forty-six".