1203430431 has 16 divisors (see below), whose sum is σ = 1838188800. Its totient is φ = 686028288.

The previous prime is 1203430421. The next prime is 1203430457. The reversal of 1203430431 is 1340343021.

It is not a de Polignac number, because 1203430431 - 2⁹ = 1203429919 is a prime.

It is a super-2 number, since 2×1203430431² = 2896489604513691522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1203430398 and 1203430407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203430421) 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, 59586 + ... + 77183.

It is an arithmetic number, because the mean of its divisors is an integer number (114886800).

Almost surely, 2^1203430431 is an apocalyptic number.

1203430431 is a deficient number, since it is larger than the sum of its proper divisors (634758369).

1203430431 is a wasteful number, since it uses less digits than its factorization.

1203430431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137198.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1203430431 is about 34690.4948220691. The cubic root of 1203430431 is about 1063.6702104976.

Adding to 1203430431 its reverse (1340343021), we get a palindrome (2543773452).

The spelling of 1203430431 in words is "one billion, two hundred three million, four hundred thirty thousand, four hundred thirty-one".