1401031155 has 16 divisors (see below), whose sum is σ = 2245297824. Its totient is φ = 746000640.

The previous prime is 1401031141. The next prime is 1401031189. The reversal of 1401031155 is 5511301041.

It is a happy number.

It is not a de Polignac number, because 1401031155 - 2⁸ = 1401030899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66436 + ... + 84945.

It is an arithmetic number, because the mean of its divisors is an integer number (140331114).

Almost surely, 2^1401031155 is an apocalyptic number.

1401031155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1401031155 is a deficient number, since it is larger than the sum of its proper divisors (844266669).

1401031155 is a wasteful number, since it uses less digits than its factorization.

1401031155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152006.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1401031155 is about 37430.3507197034. The cubic root of 1401031155 is about 1118.9635274629.

Adding to 1401031155 its reverse (5511301041), we get a palindrome (6912332196).

The spelling of 1401031155 in words is "one billion, four hundred one million, thirty-one thousand, one hundred fifty-five".