1431143402 has 32 divisors (see below), whose sum is σ = 2451027600. Its totient is φ = 620863488.

The previous prime is 1431143401. The next prime is 1431143431. The reversal of 1431143402 is 2043411341.

It can be written as a sum of positive squares in 8 ways, for example, as 552673081 + 878470321 = 23509^2 + 29639^2 .

It is not an unprimeable number, because it can be changed into a prime (1431143401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444374 + ... + 447582.

Almost surely, 2^1431143402 is an apocalyptic number.

1431143402 is a deficient number, since it is larger than the sum of its proper divisors (1019884198).

1431143402 is a wasteful number, since it uses less digits than its factorization.

1431143402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1431143402 is about 37830.4560109973. The cubic root of 1431143402 is about 1126.9233671397.

Adding to 1431143402 its reverse (2043411341), we get a palindrome (3474554743).

It can be divided in two parts, 143 and 1143402, that multiplied together give a triangular number (163506486 = T₁₈₀₈₃).

The spelling of 1431143402 in words is "one billion, four hundred thirty-one million, one hundred forty-three thousand, four hundred two".