1011126431 has 16 divisors (see below), whose sum is σ = 1174376448. Its totient is φ = 852638400.

The previous prime is 1011126427. The next prime is 1011126433. The reversal of 1011126431 is 1346211101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1011126431 - 2² = 1011126427 is a prime.

It is a super-2 number, since 2×1011126431² = 2044753318933595522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011126433) 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, 217946 + ... + 222536.

It is an arithmetic number, because the mean of its divisors is an integer number (73398528).

Almost surely, 2^1011126431 is an apocalyptic number.

1011126431 is a deficient number, since it is larger than the sum of its proper divisors (163250017).

1011126431 is an equidigital number, since it uses as much as digits as its factorization.

1011126431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1011126431 is about 31798.2142737607. The cubic root of 1011126431 is about 1003.6951394598.

Adding to 1011126431 its reverse (1346211101), we get a palindrome (2357337532).

The spelling of 1011126431 in words is "one billion, eleven million, one hundred twenty-six thousand, four hundred thirty-one".