1131434031 has 64 divisors (see below), whose sum is σ = 1982002176. Its totient is φ = 557107200.

The previous prime is 1131433993. The next prime is 1131434041. The reversal of 1131434031 is 1304341311.

It is not a de Polignac number, because 1131434031 - 2¹³ = 1131425839 is a prime.

It is a super-2 number, since 2×1131434031² = 2560285933009817922, 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 = 1131433989 and 1131434007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131434041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 607041 + ... + 608901.

It is an arithmetic number, because the mean of its divisors is an integer number (30968784).

Almost surely, 2^1131434031 is an apocalyptic number.

1131434031 is a deficient number, since it is larger than the sum of its proper divisors (850568145).

1131434031 is a wasteful number, since it uses less digits than its factorization.

1131434031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1131434031 is about 33636.7957897300. The cubic root of 1131434031 is about 1042.0208583203.

Adding to 1131434031 its reverse (1304341311), we get a palindrome (2435775342).

The spelling of 1131434031 in words is "one billion, one hundred thirty-one million, four hundred thirty-four thousand, thirty-one".