1431861125 has 16 divisors (see below), whose sum is σ = 1892080944. Its totient is φ = 1078105600.

The previous prime is 1431861107. The next prime is 1431861127. The reversal of 1431861125 is 5211681341.

It can be written as a sum of positive squares in 8 ways, for example, as 642419716 + 789441409 = 25346^2 + 28097^2 .

It is not a de Polignac number, because 1431861125 - 2¹⁴ = 1431844741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1431861091 and 1431861100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431861127) 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, 334784 + ... + 339033.

It is an arithmetic number, because the mean of its divisors is an integer number (118255059).

Almost surely, 2^1431861125 is an apocalyptic number.

It is an amenable number.

1431861125 is a deficient number, since it is larger than the sum of its proper divisors (460219819).

1431861125 is an equidigital number, since it uses as much as digits as its factorization.

1431861125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673849 (or 673839 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 1431861125 is about 37839.9408694041. The cubic root of 1431861125 is about 1127.1117208825. Note that the first 3 decimals are identical.

The spelling of 1431861125 in words is "one billion, four hundred thirty-one million, eight hundred sixty-one thousand, one hundred twenty-five".