1151203423 has 2 divisors, whose sum is σ = 1151203424. Its totient is φ = 1151203422.

The previous prime is 1151203411. The next prime is 1151203463. The reversal of 1151203423 is 3243021511.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3243021511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1151203423 - 2¹³ = 1151195231 is a prime.

It is a super-2 number, since 2×1151203423² = 2650538642253833858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1151203394 and 1151203403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151203463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575601711 + 575601712.

It is an arithmetic number, because the mean of its divisors is an integer number (575601712).

Almost surely, 2^1151203423 is an apocalyptic number.

1151203423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151203423 is an equidigital number, since it uses as much as digits as its factorization.

1151203423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1151203423 is about 33929.3887802300. The cubic root of 1151203423 is about 1048.0548790168.

Adding to 1151203423 its reverse (3243021511), we get a palindrome (4394224934).

The spelling of 1151203423 in words is "one billion, one hundred fifty-one million, two hundred three thousand, four hundred twenty-three".