1031226139 has 2 divisors, whose sum is σ = 1031226140. Its totient is φ = 1031226138.

The previous prime is 1031226101. The next prime is 1031226173. The reversal of 1031226139 is 9316221301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031226139 - 2²⁹ = 494355227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031226199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515613069 + 515613070.

It is an arithmetic number, because the mean of its divisors is an integer number (515613070).

Almost surely, 2^1031226139 is an apocalyptic number.

1031226139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031226139 is an equidigital number, since it uses as much as digits as its factorization.

1031226139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1031226139 is about 32112.7099292476. The cubic root of 1031226139 is about 1010.3022129316.

The spelling of 1031226139 in words is "one billion, thirty-one million, two hundred twenty-six thousand, one hundred thirty-nine".